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Worksheet 2 class 6 Mindful Eating

Class VI Science - Mindful Eating

Fill in the Blanks

1. The main source of energy in our food is __________ (a) Protein b) Carbohydrates c) Fats d) Vitamins).

Carbohydrates

2. __________ helps in building and repairing body tissues (a) Carbohydrates b) Proteins c) Minerals d) Water).

Proteins

3. The deficiency of __________ causes rickets (a) Vitamin A b) Vitamin D c) Iron d) Calcium).

Vitamin D

4. __________ is essential for healthy bones and teeth (a) Iron b) Calcium c) Vitamin C d) Iodine).

Calcium

5. Eating a __________ diet helps maintain good health (a) Balanced b) Oily c) Sugary d) Spicy).

Balanced

6. __________ protects our body from diseases (a) Fats b) Vitamins c) Carbohydrates d) Fibre).

Vitamins

7. Excessive __________ can lead to obesity (a) Proteins b) Fats c) Water d) Minerals).

Fats

8. __________ is needed for the formation of hemoglobin (a) Iron b) Calcium c) Vitamin B d) Sodium).

Iron

9. __________ helps in digestion and prevents constipation (a) Fats b) Fibre c) Sugars d) Starch).

Fibre

10. __________ is the most important nutrient for life (a) Water b) Protein c) Carbohydrates d) Vitamins).

Water

Match the Pair

11. Match: (a) Carbohydrates (i) Prevents scurvy (b) Vitamin C (ii) Energy source)

a - ii, b - i

12. Match: (a) Proteins (i) Strong bones (b) Calcium (ii) Tissue repair)

a - ii, b - i

13. Match: (a) Fats (i) Healthy skin (b) Vitamin A (ii) Energy storage)

a - ii, b - i

14. Match: (a) Iron (i) Prevents anemia (b) Vitamin D (ii) Bone strength)

a - i, b - ii

15. Match: (a) Fibre (i) Digestion aid (b) Water (ii) Hydration)

a - i, b - ii

16. Match: (a) Iodine (i) Thyroid function (b) Vitamin B (ii) Energy release)

a - i, b - ii

17. Match: (a) Minerals (i) Bone health (b) Carbohydrates (ii) Muscle growth)

a - i, b - ii

18. Match: (a) Sugars (i) Quick energy (b) Proteins (ii) Long-term energy)

a - i, b - ii

19. Match: (a) Vitamin E (i) Antioxidant (b) Calcium (ii) Teeth strength)

a - i, b - ii

20. Match: (a) Sodium (i) Fluid balance (b) Fibre (ii) Bowel movement)

a - i, b - ii

Methods of separation

Class VI CBSE Science Questions

Magnetic Effect Questions

1. What happens when a north pole is brought near another north pole?

They repel each other.

2. Which material can be attracted by a magnet?

Iron

3. What is the shape of a magnetic field around a bar magnet?

Curved lines

4. Where is the magnetic force strongest in a bar magnet?

At the poles

Separation Methods Questions

5. Which method is used to separate stones from rice?

Handpicking

6. What method separates salt from water?

Evaporation

7. Which method is used to separate husk from grains?

Winnowing

8. How can sand be separated from water?

Filtration

Match the Pair MCQs

9. Match the following: (a) Magnet (i) Separates husk (b) Winnowing (ii) Attracts iron)

a - ii, b - i

10. Match the following: (a) Evaporation (i) Removes stones (b) Handpicking (ii) Separates salt)

a - ii, b - i

11. Match the following: (a) North Pole (i) Repels (b) South Pole (ii) Attracts opposite)

a - i, b - ii

One-Word Answer Questions

12. What is a natural magnet called?

Lodestone

13. Which pole points north when a magnet is suspended?

North

14. What is the process of settling solids called?

Sedimentation

Diagram-Based Questions

15. Draw the magnetic field lines around a bar magnet.

Field lines emerge from the north pole and enter the south pole.

16. Draw a filtration setup to separate sand from water.

Sand is trapped by filter paper, and water passes through.

Case Study Questions

17. Riya observed that iron nails stick to a bar magnet but not to a wooden stick. She also noticed that when she mixed sand and iron filings, a magnet could separate them. What can she infer about magnets?

Magnets attract iron and can be used to separate iron from mixtures.

18. Amit found that pouring water into a mixture of mud and water caused the mud to settle at the bottom. He then poured the clear water into another container. What separation methods did he use?

Sedimentation and decantation.

19. During a science fair, Priya used a sieve to separate pebbles from flour. Later, she used winnowing to remove husk from grains. What did she learn about separation methods?

Different methods are used based on the size and weight of materials.

20. Karan noticed that salt dissolved in water did not separate with a filter. He heated the mixture, and salt remained. What method did he use?

Evaporation

Class V EVS Snake Charmer Questions

Class V EVS - Snake Charmer, Tasting to Digesting, Super Senses

Snake Charmer Questions

1. What instrument do snake charmers use to attract snakes?

Pungi

2. Are snakes deaf to the music played by charmers?

Yes

3. What type of snakes do charmers usually handle?

Cobra

4. Why do snakes move to the pungi sound?

Follow movement

Tasting to Digesting Questions

5. Where does digestion start in the human body?

Mouth

6. What helps to chew food?

Teeth

7. Where is food stored after swallowing?

Stomach

8. What carries food from the mouth to the stomach?

Oesophagus

Super Senses Questions

9. Which animal uses its nose to smell danger?

Dog

10. What sense helps bats fly in the dark?

Echolocation

11. Which bird has a sharp sense of sight?

Eagle

12. How do snakes sense their prey?

Tongue

Match the Pair MCQs

13. Match the following: (a) Pungi (i) Digestion starts (b) Mouth (ii) Snake charmer tool)

a - ii, b - i

14. Match the following: (a) Eagle (i) Smell (b) Dog (ii) Sight)

a - ii, b - i

15. Match the following: (a) Stomach (i) Chews food (b) Teeth (ii) Stores food)

a - ii, b - i

One-Word Answer Questions

16. What is the food pipe called?

Oesophagus

17. Which sense helps a bat?

Echolocation

18. What do cobras lack?

Ears

Diagram-Based Questions

19. Draw the human digestive system.

Mouth to stomach to intestines.

20. Draw a snake charmer with a pungi.

Man playing pungi, cobra rising.

Case Study Questions

21. Ravi watched a snake charmer play the pungi, but the snake didn’t hear the music. What did the snake respond to?

Movement of the pungi

22. Anu ate an apple and felt it move down her throat. Where did it go next?

Stomach

23. A dog sniffed and found a hidden bone. What sense helped it?

Smell

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Worksheet 2: Class 6 Science - Components of Food

Welcome! This worksheet will help you understand the different components of the food we eat and their importance for our body. Let's explore the world of nutrients and balanced diets!

What Are the Components of Food?

Our food contains several components that are essential for our body's growth and health. These are called **nutrients**. The main nutrients found in food are:

• Carbohydrates: These are the body's main source of energy. They are found in foods like rice, wheat, and potatoes.
• Proteins: Known as the "body-building food," proteins help in the growth and repair of our body tissues. Pulses, milk, eggs, and meat are rich in protein.
• Fats: Fats also provide energy, and they give us even more energy than carbohydrates. Butter, oil, and nuts are sources of fat.
• Vitamins: Vitamins help protect our body against diseases. We need them in small amounts. Different vitamins like A, C, D, and E are found in fruits, vegetables, and milk.
• Minerals: Minerals are also needed in small quantities for the proper functioning of our body. Examples include iron, calcium, and iodine.
• Water: Water helps our body absorb nutrients from food and gets rid of waste.
• Roughage (Dietary Fibre): This helps our body get rid of undigested food and is found in whole grains, fruits, and vegetables.

To stay healthy, we must eat a **balanced diet** that contains all these nutrients in the right amounts.

Practice Questions

1. Fill in the blank: The nutrient that is the main source of energy for our body is _____.

Carbohydrates

2. True or False: Proteins are called "body-building food."

True.

3. Match the food item with the nutrient it is rich in:

(a) Pulses (i) Fats

(b) Butter (ii) Proteins

(c) Spinach (iii) Minerals (Iron)

a - ii, b - i, c - iii

4. What is the role of vitamins in our body? Give two examples of food items rich in vitamins.

Vitamins protect our body from diseases. Examples of vitamin-rich foods are **fruits** and **vegetables**.

5. Fill in the blank: A diet that provides all the necessary nutrients in the right proportion is called a _____ diet.

Balanced

6. Why is roughage important for our body?

Roughage helps our body get rid of undigested food and keeps our digestive system healthy.

7. Name the two main nutrients that provide energy to our body.

Carbohydrates and Fats.

8. A boy eats only chips and candy. Is he eating a balanced diet? Why or why not?

No, he is not. Chips and candy provide energy but lack essential nutrients like proteins, vitamins, and minerals needed for proper growth and protection from diseases.

Worksheet 1: Class 6 Science - Food: Where Does It Come From?

Welcome to your first science worksheet! Let's explore the world of food and find out where the food we eat comes from. This worksheet will test your knowledge about different types of food sources and the eating habits of animals.

Understanding Our Food Sources

Every day, we eat a wide variety of food items. These items come from either **plants** or **animals**. For example, ingredients like grains, vegetables, and fruits come from plants, while milk, eggs, and meat come from animals.

Different parts of plants serve as our food. We eat the **roots** (like carrot), **stems** (like sugarcane), **leaves** (like spinach), **fruits** (like apple), and **seeds** (like wheat). Even some flowers are edible! Just like us, animals also need food to survive.

Based on what they eat, animals can be classified into three main groups:

• Herbivores: Animals that eat only plants. (e.g., Cow, Deer)
• Carnivores: Animals that eat only other animals. (e.g., Lion, Tiger)
• Omnivores: Animals that eat both plants and other animals. (e.g., Human, Crow)

Practice Questions

1. Fill in the blank: Honeybees collect nectar from flowers to make _____.

Honey

2. True or False: Tigers are herbivores because they eat only plants.

False. Tigers are carnivores because they eat only other animals.

3. Match the food item with its source:

(a) Rice (i) Animal

(b) Egg (ii) Plant

a - ii, b - i

4. Match the animal with its food habit:

(a) Goat (i) Omnivore

(b) Lion (ii) Herbivore

(c) Human (iii) Carnivore

a - ii, b - iii, c - i

5. Fill in the blank: The main food source for a cow is _____.

Grass or plants

6. True or False: We get sugar from the stem of the sugarcane plant.

True

7. Name two food items that we get from animals.

Milk and eggs.

8. What part of the cauliflower plant do we eat? Is it a fruit, flower, or root?

We eat the flower of the cauliflower plant.

Worksheet 3: Class 6 Science - Fibre to Fabric

Welcome! This worksheet will help you understand how the clothes you wear are made. We will explore the journey from a simple fibre to a finished fabric. Let's learn about the different types of fibres and the processes they go through!

From Fibre to Fabric: The Journey

The thin strands of thread that we see are made of even thinner strands called **fibres**. Fibres can be broadly divided into two types:

• Natural Fibres: These are obtained from plants and animals. Examples include cotton, jute, silk, and wool.
  • **Cotton:** It is obtained from the cotton plant's fruit, called **cotton balls**. After picking, the seeds are separated from the fibres by a process called **ginning**.
  • **Jute:** This fibre is obtained from the stem of the jute plant. The plant's stem is soaked in water and allowed to rot, a process called **retting**, before the fibres are separated.
  • **Silk:** Silk is obtained from the cocoon of the **silkworm**.
  • **Wool:** Wool is obtained from the fleece of animals like sheep, goats, and yaks.
• Synthetic Fibres: These are man-made fibres. Examples are nylon and polyester.

The process of making yarn from fibres is called **spinning**. Then, the process of arranging two sets of yarns together to make a fabric is called **weaving**, which is done on machines called **looms**. Another method of making fabric is **knitting**, which uses a single yarn to create a piece of fabric.

Practice Questions

1. Fill in the blank: The process of separating cotton fibres from their seeds is called _____.

Ginning

2. True or False: Synthetic fibres are obtained from plants and animals.

False. Natural fibres are obtained from plants and animals. Synthetic fibres are man-made.

3. Match the fibre to its source:

(a) Jute (i) Sheep

(b) Wool (ii) Stem of a plant

(c) Silk (iii) Cocoon of a silkworm

a - ii, b - i, c - iii

4. What is the process of making yarn from fibre called?

Spinning.

5. Fill in the blank: _____ are the thinnest strands of a fabric.

Fibres

6. Explain the difference between weaving and knitting.

**Weaving** is the process of arranging two sets of yarns together to make a fabric. **Knitting** uses a single yarn to create a piece of fabric.

7. From which part of the cotton plant do we get cotton fibre?

From the fruit of the cotton plant, called **cotton balls**.

8. What is retting, and which fibre is obtained through this process?

Retting is the process of soaking the jute plant's stem in water to allow it to rot, which helps to separate the fibres. This process is used to obtain **jute** fibre.

Worksheet 4: Class 6 Science - Sorting Materials into Groups

Welcome! This worksheet will help you understand the different properties of materials and why it's important to sort them into groups. Let's learn how to classify objects based on their properties!

Why Do We Group Materials?

We see a huge variety of objects around us, made from different materials like wood, plastic, glass, and metal. It would be confusing to study each object individually. So, we group them based on their similarities and properties. Grouping objects makes it easier to study their properties and to use them for specific purposes.

Properties of Materials

Materials have different properties that help us classify them:

• Appearance: Some materials, like gold and iron, are shiny (have **lustre**), while others, like wood and paper, do not.
• Hardness: Materials can be hard or soft. You can easily compress soft materials (like a sponge) but not hard materials (like a stone).
• Solubility: Some substances dissolve in water (**soluble**), like sugar and salt. Others do not (**insoluble**), like sand.
• Transparency: Materials can be **transparent** (you can see through them clearly, like glass), **translucent** (you can see through them partially, like frosted glass), or **opaque** (you cannot see through them at all, like wood).
• Float or Sink: Some objects float on the surface of water, while others sink to the bottom. For example, a dry leaf floats, but a stone sinks.

Understanding these properties is the key to sorting materials correctly.

Practice Questions

1. Fill in the blank: A material that is shiny is said to have _____.

Lustre

2. True or False: A piece of cotton is a hard material.

False. Cotton is a soft material.

3. Match the material with its property:

(a) Glass (i) Opaque

(b) Wood (ii) Transparent

(c) Frosted Glass (iii) Translucent

a - ii, b - i, c - iii

4. What is the difference between a soluble and an insoluble substance? Give an example of each.

A **soluble** substance dissolves in water (e.g., sugar), while an **insoluble** substance does not (e.g., sand).

5. Fill in the blank: A stone will _____ in water, but a dry leaf will _____.

A stone will **sink** in water, but a dry leaf will **float**.

6. Why is a glass tumbler used to hold liquids and not a cloth?

A glass tumbler is **hard**, **transparent**, and **impervious to water**, while a cloth is soft and absorbs water, making it unsuitable for holding liquids.

7. Name three objects that are made of plastic.

A plastic bottle, a plastic bucket, and a plastic toy.

8. What is the main reason we group materials?

We group materials to make it easier to study them and their properties, as well as to use them more efficiently for various purposes.

Worksheet 5: Class 6 Science - Separation of Substances

Welcome! In this worksheet, we will learn about the different methods used to separate substances. From your kitchen to a science lab, separation is a very important process. Let's explore how we can separate mixtures into their individual components!

Methods of Separation

When we have a mixture, we often need to separate its components for various reasons, such as to remove harmful substances or to obtain a useful substance. The method we choose depends on the properties of the components in the mixture.

Common Methods:

• **Handpicking:** Used to separate slightly larger, visible impurities like stones from rice or pulses.
• **Threshing:** A method to separate the grain from the stalks of a plant.
• **Winnowing:** The process of separating heavier and lighter components of a mixture by using wind or a blowing air current. This is often used to separate husk from grain.
• **Sieving:** Used when the components of a mixture have different sizes. A sieve allows smaller particles to pass through while retaining larger ones.
• **Sedimentation, Decantation, and Filtration:** These methods are used to separate an insoluble solid from a liquid. **Sedimentation** is when a heavier, insoluble solid settles at the bottom of a liquid. **Decantation** is the process of pouring out the liquid without disturbing the settled solid. **Filtration** is a more effective method where the liquid is passed through a filter paper.
• **Evaporation:** This method is used to separate a soluble solid from a liquid. When a liquid (like water) is heated, it turns into vapor, leaving the solid component behind. This is how salt is obtained from seawater.

Practice Questions

1. Fill in the blank: The process of separating a liquid from a solid that has settled at the bottom is called _____.

Decantation

2. True or False: Winnowing is used to separate sand from water.

False. Winnowing is used to separate a heavier and a lighter solid, while sand from water is separated by sedimentation and decantation.

3. Match the mixture with the best method of separation:

(a) Rice and stones (i) Sieving

(b) Tea leaves from tea (ii) Evaporation

(c) Sand and small pebbles (iii) Handpicking

(d) Salt from water (iv) Filtration

a - iii, b - iv, c - i, d - ii

4. What is the difference between a soluble and an insoluble substance?

A **soluble** substance (like sugar) dissolves in a liquid, while an **insoluble** substance (like sand) does not.

5. Fill in the blank: The process of converting water into its vapor is called _____.

Evaporation

6. Why is it not possible to separate salt from water by filtration?

Salt is a soluble substance, which means it dissolves completely in water. It passes through the filter paper along with the water, so it cannot be separated by filtration.

7. Name the three steps used to separate sand from water.

Sedimentation, Decantation, and Filtration.

8. What is threshing? What kind of substances does it separate?

Threshing is the process of separating grains from the stalks of a plant. It separates the grain (the desired product) from the stalks (the unwanted part).

Worksheet 7: Class 6 Science - Getting to Know Plants

Welcome! In this worksheet, we'll explore the amazing world of plants. We will learn about the different types of plants and the functions of their various parts. Let's get to know the plants around us!

Types of Plants and Their Parts

Plants are classified into three main categories based on their stems and branches:

• Herbs: These are small plants with soft, green, and tender stems. They usually have few branches or no branches at all. Examples include spinach and mint.
• Shrubs: These plants are medium-sized with hard, woody stems that branch out near the base. The stem is not very thick. Examples include lemon and rose plants.
• Trees: These are tall and big plants with hard, thick, woody stems (trunks) and branches high above the ground. Examples include mango and banyan trees.

Each part of a plant has a specific job:

• Stem: The stem transports water and minerals from the roots to the leaves and food from the leaves to other parts of the plant.
• Leaf: Leaves are the food factories of the plant. They make food through a process called **photosynthesis**. Leaves have a main vein called the **midrib** and many smaller side veins.
• Root: The roots anchor the plant firmly to the soil and absorb water and minerals. There are two main types of root systems: a **taproot** (a single main root) and a **fibrous root** (a cluster of similar roots).
• Flower: Flowers are the reproductive part of the plant.

Practice Questions

1. Fill in the blank: Plants with soft, green, and tender stems are called _____.

Herbs

2. True or False: The main function of a stem is to absorb water from the soil.

False. The main function of a stem is to transport water and food. The roots absorb water from the soil.

3. Match the plant to its type:

(a) Spinach (i) Tree

(b) Rose (ii) Shrub

(c) Mango (iii) Herb

a - iii, b - ii, c - i

4. What is photosynthesis?

Photosynthesis is the process by which green leaves make food for the plant using carbon dioxide, water, and sunlight.

5. Fill in the blank: The main root from which other smaller roots grow is called a _____.

Taproot

6. Why are leaves called the "food factories" of a plant?

Leaves are called the food factories because they make food for the entire plant through the process of photosynthesis.

7. Name the two main functions of roots.

Roots anchor the plant to the soil and absorb water and minerals from the soil.

8. What is the difference between a shrub and a tree?

A **shrub** is a medium-sized plant with a hard, woody stem that branches out near the base. A **tree** is a tall and big plant with a thick, woody stem (trunk) and branches high above the ground.

Worksheet 8: Class 6 Science - Body Movements

Welcome! In this worksheet, we'll explore the incredible ways our bodies and other animals move. We will learn about the human skeletal system, the types of joints, and how muscles make movement possible. Let's get moving!

The Human Body and Its Movements

The human body is built for movement. Our bones and muscles work together to help us walk, run, and jump. The **skeleton** is the framework of our body, made up of bones. It gives shape and provides support. A human skeleton has about 206 bones.

[attachment_0](attachment)

A place where two or more bones meet is called a **joint**. Joints allow our body parts to bend and move. There are different types of joints:

• **Ball-and-Socket Joint:** This joint allows movement in all directions (like a ball fitting in a socket). Example: Shoulder joint.
• **Hinge Joint:** This joint allows movement only in one plane, like a door hinge. Example: Elbow and knee joints.
• **Pivot Joint:** This joint allows the head to turn from side to side. It is found where our head connects to our neck.
• **Fixed Joints:** These joints do not allow any movement. Example: The joints in our skull.

Muscles are attached to the bones. They work in pairs to cause movement. When one muscle contracts (shortens), the bone is pulled, and the other muscle relaxes. To move the bone back, the first muscle relaxes and the second one contracts.

Practice Questions

1. Fill in the blank: The framework of the human body is called the _____.

Skeleton

2. True or False: Bones can bend without the help of joints.

False. Bones cannot bend on their own. They need joints to allow movement.

3. Match the joint to its location:

(a) Elbow joint (i) Ball-and-Socket Joint

(b) Shoulder joint (ii) Hinge Joint

(c) Neck joint (iii) Pivot Joint

a - ii, b - i, c - iii

4. Explain how muscles work in pairs to cause movement.

When one muscle contracts (shortens), it pulls the bone, and the other muscle in the pair relaxes. To reverse the movement, the first muscle relaxes while the second one contracts.

5. Fill in the blank: The type of joint found in the wrist that allows circular movement is a _____ joint.

Gliding

6. Why are the joints in our skull considered fixed joints?

The joints in our skull do not allow any movement, which is essential to protect the brain.

7. Name three different types of joints found in the human body.

Ball-and-socket joint, Hinge joint, and Pivot joint.

8. What is the role of the skeleton in our body?

The skeleton gives our body its shape, provides a framework, and protects our internal organs.

Worksheet 9: Class 6 Science - The Living Organisms and Their Surroundings

Welcome! This worksheet will help you understand the relationship between living organisms and their environment. We will explore what makes something living, where organisms live, and how they adapt to their surroundings. Let's learn about the diverse habitats on our planet!

Habitats and Adaptation

A **habitat** is the home or dwelling place of an organism. It provides an organism with everything it needs to survive, such as food, water, and shelter. Different organisms live in different habitats, like deserts, mountains, oceans, and forests. The living things that are found in a habitat are called its **biotic components**, and the non-living things are called **abiotic components**.

Examples of biotic components include plants, animals, and microorganisms. Abiotic components include air, water, soil, light, and temperature. All living organisms depend on both biotic and abiotic factors for their survival.

The ability of an organism to adjust to its surroundings is called **adaptation**. For example, a camel has adapted to live in the desert. It has long legs to keep its body away from the hot sand and can survive for many days without water. Similarly, a fish has gills to breathe in water, which is an adaptation to its aquatic habitat. [attachment_0](attachment)

Practice Questions

1. Fill in the blank: The home or dwelling place of an organism is called its _____.

Habitat

2. True or False: All living organisms can survive in the same habitat.

False. Different organisms have different needs and are adapted to live in different habitats.

3. Match the item to its category:

(a) A tree (i) Abiotic Component

(b) Water (ii) Biotic Component

(c) A dog (iii) Abiotic Component

(d) Soil (iv) Biotic Component

a - ii, b - i, c - iv, d - iii

4. What is adaptation? Give one example of a plant that has adapted to a desert environment.

**Adaptation** is the process by which an organism develops features that help it survive in its habitat. A cactus is a plant that has adapted to the desert; its stem stores water and its leaves are reduced to spines to prevent water loss.

5. Fill in the blank: The two main components of a habitat are _____ and _____ components.

Biotic and Abiotic

6. Why can a fish not survive on land?

A fish cannot survive on land because it has gills to breathe oxygen dissolved in water, not air. It is adapted to an aquatic habitat.

7. Name three features of living organisms.

Living organisms can grow, move, breathe, and reproduce.

8. What is the difference between a mountain habitat and an aquatic habitat?

A **mountain habitat** is characterized by cold weather and rocky soil. An **aquatic habitat** is in a body of water, such as a pond, lake, or ocean.

Worksheet 10: Class 6 Science - Motion and Measurement of Distances

Welcome! This worksheet will help you understand how things move and how we measure how far they go. We will explore different types of motion and learn why having standard units of measurement is so important. Let's get started!

Motion and Measurement

We see objects moving all around us. **Motion** is simply a change in an object's position over time. Motion can be of different types:

• **Rectilinear Motion:** This is movement in a straight line, like a car on a straight road.
• **Circular Motion:** This is movement along a circular path, like a stone tied to a string and swung around.
• **Periodic Motion:** This is motion that repeats itself after a fixed period of time, like the swinging of a pendulum.

To describe motion, we need to be able to measure distances. In the past, people used body parts like the foot or cubit to measure. However, this caused confusion because everyone's body parts are different sizes. To solve this problem, standard units of measurement were developed. The **International System of Units (SI Units)** is now used worldwide.

The standard unit of length is the **meter (m)**. Other units, like the **centimeter (cm)** and **kilometer (km)**, are related to the meter. A kilometer is a longer unit for measuring large distances, while a centimeter is a smaller unit for measuring short distances.

Practice Questions

1. Fill in the blank: The SI unit of length is the _____.

Meter

2. True or False: The motion of a spinning top is an example of rectilinear motion.

False. The motion of a spinning top is an example of rotational motion.

3. Match the type of motion with its example:

(a) Motion of a pendulum (i) Rectilinear Motion

(b) A car moving on a straight road (ii) Circular Motion

(c) A wheel of a bicycle (iii) Periodic Motion

a - iii, b - i, c - ii

4. Why is it important to use standard units of measurement?

Standard units ensure that everyone gets the same measurement, avoiding confusion and making communication precise and reliable.

5. Fill in the blank: One kilometer is equal to _____ meters.

1000

6. What is the difference between rectilinear motion and circular motion?

**Rectilinear motion** is movement in a straight line, while **circular motion** is movement along a circular path.

7. Name two older, non-standard methods of measurement.

The cubit (the length from the elbow to the fingertips) and the foot.

8. What is the correct way to measure the length of an object with a scale?

You should place the starting point of the object at the zero mark of the scale and read the measurement with your eye directly above the point you are measuring to avoid errors.

Worksheet 11: Class 6 Science - Light, Shadows and Reflections

Welcome! This worksheet will help you understand the fascinating world of light and shadows. We will learn about how light travels, how shadows are formed, and how mirrors work. Let's explore the science of sight!

Light and Its Properties

We can see objects because of **light**. A substance that gives out its own light is called a **luminous object** (e.g., the sun, a light bulb). An object that does not give out its own light is a **non-luminous object** (e.g., a chair, a table). Light travels in a **straight line**.

Objects are classified based on how light passes through them:

• **Opaque Objects:** These objects block light completely and do not allow it to pass through. Wood, stones, and cardboard are examples of opaque objects.
• **Transparent Objects:** These objects allow all the light to pass through them. You can see clearly through transparent objects like glass or clear plastic.
• **Translucent Objects:** These objects allow some light to pass through, but you cannot see clearly through them. Examples include frosted glass and butter paper.

Shadows and Reflections

When an **opaque object** blocks the path of light, a dark patch called a **shadow** is formed behind it. A shadow requires a light source, an opaque object, and a screen (or surface) to be formed.

A **pinhole camera** is a simple device that shows how light travels in a straight line. The image formed by a pinhole camera is upside-down.

**Reflection** is the process of light bouncing off a surface. A mirror is a good reflector of light. When light hits a mirror, it bounces off and enters our eyes, allowing us to see an image. The image formed by a plane mirror is always virtual, erect (upright), and of the same size as the object.

Practice Questions

1. Fill in the blank: Light always travels in a _____ line.

Straight

2. True or False: A transparent object forms a dark shadow.

False. Only an opaque object forms a dark shadow. Transparent objects allow light to pass through completely.

3. Match the object to its property:

(a) A glass sheet (i) Opaque

(b) A brick (ii) Translucent

(c) Butter paper (iii) Transparent

a - iii, b - i, c - ii

4. What three things are required to form a shadow?

A light source, an opaque object, and a screen or surface.

5. Fill in the blank: A person's reflection in a mirror is an example of _____.

Reflection

6. Why does a pinhole camera form an inverted (upside-down) image?

Light travels in a straight line. The rays of light from the top of the object travel downwards through the pinhole to form the bottom of the image, and the rays from the bottom of the object travel upwards through the pinhole to form the top of the image.

7. Name two luminous and two non-luminous objects.

**Luminous:** Sun, candle flame. **Non-luminous:** Book, chair.

8. What is the difference between a transparent and a translucent object?

A **transparent** object allows light to pass through completely, and you can see clearly through it. A **translucent** object allows only some light to pass through, and you cannot see clearly through it.

Worksheet 12: Class 6 Science - Electricity and Circuits

Welcome! This worksheet will help you understand the basics of electricity and how an electric circuit works. We will learn about electric cells, bulbs, switches, and the difference between conductors and insulators. Let's get charged up!

Electricity: The Flow of Current

We use electricity for many things, from lighting up our homes to running our gadgets. An **electric cell** is a source of electricity. It has a positive (+) terminal and a negative (-) terminal. An electric bulb lights up when electricity flows through it. A complete path for electricity to flow is called an **electric circuit**.

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A simple electric circuit has an electric cell, a bulb, and connecting wires. An **electric switch** is a device that can open or close a circuit. When the switch is in the 'on' position, the circuit is **closed**, and electricity can flow, lighting the bulb. When the switch is in the 'off' position, the circuit is **open**, and the bulb does not light up because the path is broken.

Conductors and Insulators

Materials that allow electric current to pass through them are called **conductors**. Metals like copper, iron, and aluminum are good conductors. Materials that do not allow electric current to pass through them are called **insulators**. Examples include plastic, rubber, and wood. Insulators are used to cover electrical wires to prevent electric shocks.

Practice Questions

1. Fill in the blank: An electric cell has two terminals, a positive (+) terminal and a _____ (-) terminal.

Negative

2. True or False: A conductor does not allow electric current to pass through it.

False. A **conductor** allows electric current to pass through it. An **insulator** does not.

3. Match the item to its category:

(a) A copper wire (i) Insulator

(b) A piece of plastic (ii) Conductor

(c) Rubber band (iii) Insulator

(d) An iron nail (iv) Conductor

a - ii, b - i, c - iii, d - iv

4. What is the difference between an open circuit and a closed circuit?

In a **closed circuit**, the path for the electric current is complete, allowing the current to flow and the bulb to light up. In an **open circuit**, the path is broken, and the current cannot flow, so the bulb does not light up.

5. Fill in the blank: The device used to open or close an electric circuit is called an _____.

Electric switch

6. Why are the handles of screwdrivers often made of plastic?

The handles of screwdrivers are made of plastic because plastic is an **insulator**. This prevents a person from getting an electric shock while working on electrical devices.

7. Name the four basic components of a simple electric circuit.

Electric cell, bulb, switch, and connecting wires.

8. What is the role of an electric cell in a circuit?

An electric cell provides the source of electric current for the circuit.

Worksheet 13: Class 6 Science - Fun with Magnets

Welcome! This worksheet will help you understand the fascinating properties of magnets. We will learn about the discovery of magnets, their poles, and how they can attract or repel objects. Let's explore the fun world of magnetism!

The World of Magnets

The story of magnets began in ancient Greece with a shepherd named Magnes. He discovered that the iron tip of his stick was attracted to a rock, which was a natural magnet called magnetite. Magnets attract materials like iron, cobalt, and nickel. These are called **magnetic materials**.

A magnet's power is strongest at its ends, called the **poles**. Every magnet has two poles: a **North pole** and a **South pole**. If you bring the North pole of one magnet near the North pole of another, they will push each other away. This is called **repulsion**. If you bring a North pole and a South pole together, they will pull towards each other. This is called **attraction**. Remember: **Like poles repel, and unlike poles attract.**

A freely suspended magnet always rests in the North-South direction. This property is used to make a **compass**, a device that helps us find directions. Magnets can lose their properties if they are heated, hammered, or dropped from a height.

Practice Questions

1. Fill in the blank: The two ends of a magnet where its magnetic force is the strongest are called _____.

Poles

2. True or False: Two North poles will attract each other.

False. Like poles repel each other, so two North poles will push each other away.

3. Match the material to its category:

(a) A plastic spoon (i) Magnetic

(b) An iron nail (ii) Non-magnetic

(c) A paper clip (iii) Non-magnetic

(d) A piece of wood (iv) Magnetic

a - ii, b - iv, c - i, d - iii

4. What is the difference between magnetic and non-magnetic materials?

**Magnetic materials** are attracted by a magnet (e.g., iron), while **non-magnetic materials** are not (e.g., plastic).

5. Fill in the blank: A freely suspended magnet always points in the _____ direction.

North-South

6. How can a magnet lose its properties?

A magnet can lose its magnetic properties if it is heated, hammered, or dropped from a height.

7. Name the two poles of a magnet.

North pole and South pole.

8. What is the difference between attraction and repulsion in magnets?

**Attraction** is the force that pulls two unlike poles (North and South) together. **Repulsion** is the force that pushes two like poles (North and North, or South and South) away from each other.

Worksheet 14: Class 6 Science - Water

Welcome! This worksheet is all about water, one of the most important resources on Earth. We will learn about the different forms of water, where we find it, and the amazing cycle that keeps it moving. Let's dive in!

Water on Earth and the Water Cycle

About two-thirds of the Earth's surface is covered with water, but most of this is in oceans and seas, which is not suitable for drinking. The water we use comes from sources like rivers, lakes, ponds, and groundwater.

Water exists in three states: **solid** (ice, snow), **liquid** (water), and **gas** (water vapor). The constant movement of water between these states in nature is called the **water cycle**.

Here are the main steps of the water cycle: [attachment_0](attachment)

• **Evaporation:** The process by which water turns into water vapor due to heat from the sun.
• **Transpiration:** The process by which plants release excess water into the air as water vapor.
• **Condensation:** The process where water vapor cools down and turns back into tiny water droplets, forming clouds.
• **Precipitation:** When the clouds become too heavy, the water falls back to Earth in the form of rain, snow, or hail.

The water cycle ensures that water is continuously recycled. It's a closed system with no new water being created. This is why it's so important to conserve water and prevent wastage.

Practice Questions

1. Fill in the blank: The process of water turning into vapor is called _____.

Evaporation

2. True or False: About two-thirds of the Earth's surface is land.

False. About two-thirds of the Earth's surface is covered with water.

3. Match the state of water with its example:

(a) Solid (i) Water vapor

(b) Liquid (ii) Ice

(c) Gas (iii) Rain

a - ii, b - iii, c - i

4. What is the difference between evaporation and condensation?

**Evaporation** is when water turns into gas (water vapor) due to heat. **Condensation** is when water vapor cools down and turns back into liquid water.

5. Fill in the blank: The falling of water from clouds in the form of rain or snow is called _____.

Precipitation

6. Why is rainwater an important part of the water cycle?

Rainwater replenishes our rivers, lakes, and groundwater, which are our main sources of usable water.

7. Name the three main states of water.

Solid, Liquid, and Gas.

8. What is transpiration?

Transpiration is the process by which plants release excess water from their leaves into the air as water vapor.

Class 6 Science Worksheet 15: Air Around Us

Worksheet 15: Class 6 Science - Air Around Us

Welcome! This worksheet will help you understand the air that surrounds us and sustains life. We will learn about what air is made of, its properties, and how it is essential for living things and various processes. Let's explore the atmosphere!

Composition and Properties of Air

Air is a mixture of several gases. The main components are:

• **Nitrogen ($N_2$)**: Makes up about 78% of the air. It is the most abundant gas.
• **Oxygen ($O_2$)**: Makes up about 21% of the air. It is essential for breathing and combustion.
• **Carbon Dioxide ($CO_2$)**: Makes up a very small part of the air. It is used by plants for photosynthesis.
• **Water Vapour and other gases**: Water vapor is present in varying amounts and is responsible for humidity. Other gases like argon and neon are present in very small quantities.

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Air has several properties: it **occupies space**, has **weight**, and exerts **pressure**. We cannot see air, but we can feel it when it moves, such as in the form of wind. Air is also crucial for the **water cycle** and for the movement of sailboats and windmills. Without oxygen in the air, no living organism would be able to breathe.

Practice Questions

1. Fill in the blank: The major component of air is _____.

Nitrogen

2. True or False: Air does not have any weight.

False. Air has weight and exerts pressure, which is why we can inflate a balloon.

3. Match the gas to its use:

(a) Oxygen (i) Used by plants for photosynthesis

(b) Carbon Dioxide (ii) Used for breathing and combustion

(c) Nitrogen (iii) Most abundant gas in the atmosphere

a - ii, b - i, c - iii

4. Why do we need oxygen?

All living things need oxygen to breathe and to release energy from food.

5. Fill in the blank: Moving air is called _____.

Wind

6. Explain how air helps in the water cycle.

Air contains water vapor, and moving air (wind) helps in the processes of evaporation and transpiration, which are key parts of the water cycle.

7. Name three properties of air.

Air occupies space, has weight, and exerts pressure.

8. What is the difference between air and wind?

**Air** is the mixture of gases that surrounds us. **Wind** is simply air in motion.

Chapter 1: Nutrition in Plants PT 2

CBSE Class 7 Science Exam 2025-26

Chapter 1: Nutrition in Plants

Instructions: Answer all questions. Draw neat diagrams wherever required. Use \(\pi = \frac{22}{7}\) where necessary.

Section A: Objective Type Questions (20 x 1 = 20 marks)

1. What is the process by which plants make their food?
2. Fill in the blank: Chlorophyll is present in __________ of the plant cells.
3. True or False: All plants carry out photosynthesis.
4. Which gas is absorbed by plants during photosynthesis?
5. Name a plant that gets nutrition by trapping insects.
6. Write the word equation for photosynthesis.
7. Fill in the blank: Saprotrophs obtain nutrients from __________ substances.
8. Choose the correct option: Plants obtain nitrogen from (a) Air (b) Soil (c) Water (d) Sunlight.
9. True or False: Photosynthesis occurs only in the presence of sunlight.
10. Name one heterotrophic plant.
11. Which part of the plant takes in carbon dioxide?
12. Fill in the blank: The process of breaking down food to release energy is called __________.
13. True or False: Rhizobium bacteria help plants by fixing nitrogen.
14. What pigment is responsible for green color in plants?
15. Write one example of a parasitic plant.
16. Fill in the blank: Nutrition in plants is essential for __________ and growth.
17. Which organelle in the plant cell performs photosynthesis?
18. True or False: Saprotrophs are fungi and bacteria.
19. Name the gas released during photosynthesis.
20. Which process replenishes nutrients in the soil?

Section B: Very Short Answer Questions (6 x 2 = 12 marks)

21. Explain autotrophic nutrition with an example.
22. What are saprotrophs? How do they obtain nutrition?
23. Describe the role of chlorophyll in photosynthesis.
24. Write about the importance of sunlight in nutrition.
25. How do insectivorous plants differ from other plants?
26. Explain the role of nitrogen-fixing bacteria in the soil.

Section C: Short Answer Questions (7 x 3 = 21 marks)

27. Describe the process of photosynthesis in plants.
28. Explain the different modes of nutrition in plants.
29. Discuss how nutrients are replenished in the soil naturally.
30. Compare autotrophic and heterotrophic nutrition.
31. Explain the mechanism by which insectivorous plants trap and digest insects.
32. Describe the role of roots in plant nutrition.
33. What are the main components required for photosynthesis?

Section D: Long Answer Questions (5 x 5 = 25 marks)

34. Discuss the importance of nutrition in plants and explain the process of photosynthesis with a labeled diagram.
35. Describe the different types of heterotrophic nutrition in plants with examples.
36. Explain the role of decomposers (saprotrophs) in the ecosystem and nutrient cycling.
37. Discuss the significance of nitrogen fixation in agriculture and its impact on soil fertility.
38. Design a simple experiment to prove that sunlight is essential for photosynthesis.

Case Study Questions (Based on Passage) (4 to 5 sub-questions)

Read the passage below carefully and answer the questions that follow:

Plants make their food by a process called photosynthesis, which requires sunlight, carbon dioxide, water, and chlorophyll. In some plants like pitcher and sundew, they trap insects to fulfill their nutrient needs. In the soil, nitrogen-fixing bacteria like Rhizobium live symbiotically with leguminous plants and convert atmospheric nitrogen into forms usable by plants. Saprotrophs like fungi and bacteria decompose dead organisms and recycle nutrients back to the soil.

39. What is the process by which plants make their food?
40. Name two types of heterotrophic nutrition found in plants.
41. Explain the role of Rhizobium bacteria in plant nutrition.
42. What is the significance of saprotrophs in the ecosystem?
43. Give an example of an insectivorous plant.

All the best!