Class VI Science Quiz: Measurement of Length and Motion

Part 1: Measurement Basics

1. What unit did Deepa’s mother use to instruct the tailor to increase the uniform length?

Char angula (four fingers width)

2. What is the term for the length of an arm used by Hardeep’s grandmother to measure cloth?

Balisht

3. How does a farmer measure land according to Padma?

By counting strides

4. What body part did Anish mention farmers sometimes use to measure length?

Feet

5. What body part did Deepa suggest using to measure the table’s length?

Handspan

6. Why did the students’ handspan measurements of the table differ in Table 5.1?

Their handspans are of different sizes

7. What is a unit in the context of measuring length?

A standard quantity used to express measurement, like handspan or metre

8. What are the two parts of a length measurement?

A number and a unit

9. Why do measurements using body parts like handspans vary?

Body parts differ in size from person to person

10. Name one traditional Indian unit of length mentioned in ancient literature.

Angula

Part 2: Standard Units

11. What is the SI unit of length?

Metre

12. What is the symbol for the SI unit of length?

m

13. How many centimetres are in one metre?

100 cm

14. How many millimetres are in one centimetre?

10 mm

15. How many metres are in one kilometre?

1000 m

16. What is the smallest unit measurable with a 15-cm scale?

Millimetre (1 mm)

17. How many centimetres is one inch equivalent to?

2.54 cm

18. Why were standard units like the metre adopted globally?

To avoid confusion in measurements when people travel or trade

19. What ancient civilization used objects with ruled markings as scales?

Harappan civilization

20. Which traditional unit is still used by carpenters and tailors?

Angula

Part 3: Measurement Techniques

21. What tool is suitable for measuring the length of a pencil?

15-cm scale

22. What tool is appropriate for measuring the height of a room?

Metre scale or measuring tape

23. Why is a flexible measuring tape used for measuring the girth of a tree?

It can wrap around curved surfaces

24. How should a scale be placed to measure length correctly?

In contact with the object along its length

25. What is the correct eye position when reading a scale?

Directly above the mark being read

26. How can you measure length with a scale that has a broken zero mark?

Use another mark (e.g., 1 cm) and subtract it from the other end’s reading

27. How do visually challenged students measure lengths?

Using scales with raised markings that can be felt

28. How can you measure the length of a curved line?

Use a flexible measuring tape or thread, then measure the thread with a scale

29. What tool did Anish’s parents likely use to measure string lights for the verandah?

Flexible measuring tape or thread

30. What should always be included when writing a length measurement?

The unit (e.g., cm, m)

Part 4: Motion and Reference Points

31. What is a reference point?

A fixed object or point used to state distance or determine motion

32. Why did Deepa and her friends have different observations about the garden’s distance?

They used their houses as different reference points

33. What was the reference point when Padma read ‘Delhi 70 km’ on a kilometre stone?

Delhi

34. How did Padma know she was getting closer to Delhi?

The kilometre stones showed decreasing distances (e.g., 70 km to 60 km)

35. When is an object considered in motion?

When its position changes with respect to a reference point over time

36. Why did Deepa conclude passengers were at rest inside the bus?

Their positions did not change with respect to the bus as the reference point

37. Why did Deepa conclude passengers were in motion when looking outside?

Their positions changed with respect to objects outside (e.g., a building)

38. What is the significance of a reference point in determining motion?

It provides a fixed point to compare an object’s position over time

39. Why might passengers on a windowless ship not know if it’s moving?

They cannot see external reference points to detect motion

40. What tool did Padma suggest for measuring the Kabaddi court?

A longer measuring tape

Part 5: Types of Motion

41. What is linear motion?

Motion along a straight line

42. What is circular motion?

Motion along a circular path

43. What is oscillatory motion?

Motion to and fro about a fixed position

44. What type of motion does an eraser dropped from a height exhibit?

Linear motion

45. What type of motion does an orange falling from a tree exhibit?

Linear motion

46. What type of motion is observed in a march-past during a parade?

Linear motion

47. What type of motion does a merry-go-round exhibit?

Circular motion

48. What type of motion does a swing in a park exhibit?

Oscillatory motion

49. What type of motion does a metal strip pressed and released exhibit?

Oscillatory motion

50. Which types of motion are considered periodic?

Circular and oscillatory motion

Part 6: Application and Analysis

51. Match: Distance between Delhi and Lucknow to a suitable unit.

Kilometre

52. Match: Thickness of a coin to a suitable unit.

Millimetre

53. Match: Length of an eraser to a suitable unit.

Centimetre

54. Match: Length of a school ground to a suitable unit.

Metre

55. Is the motion of a car on a straight road an example of linear motion? (True/False)

True

56. Is an object changing position with respect to a reference point over time in motion? (True/False)

True

57. Is 1 km equal to 100 cm? (True/False)

False

58. Which is not a standard unit of length? (i) millimetre (ii) centimetre (iii) kilometre (iv) handspan

Handspan

59. What is the smallest value measurable with a 15-cm scale?

1 mm

60. Convert 1.5 km to metres.

1500 m

61. Give an example of an object best measured in millimetres.

Thickness of a coin

62. Give an example of an object best measured in centimetres.

Length of a pencil

63. Give an example of an object best measured in metres.

Height of a room

64. What type of motion does a slide in a children’s park exhibit?

Linear motion

65. What type of motion does a see-saw in a children’s park exhibit?

Oscillatory motion

66. Why should Tasneem avoid using stretchable rubber for a metre scale?

It deforms, leading to inaccurate measurements

67. Why is paper not suitable for making a metre scale?

It is not durable and can tear easily

68. What is the purpose of a Jones Counter?

To measure distances for road-running races

69. How can you measure distance using a bicycle wheel?

Count wheel rotations and multiply by the wheel’s circumference

70. Why do leaves from the same tree vary in length and breadth?

Due to differences in growth conditions, age, or position on the tree

71. What tool did the shopkeeper use to measure cloth for Deepa’s uniform?

Metal measuring rod

72. What tool did the tailor use to measure Deepa’s body?

Flexible measuring tape

73. What ancient Indian unit was used for town planning?

Dhanusa

74. What is the smallest division on a 15-cm scale?

1 mm

75. Why should you leave a space between the number and unit in measurements?

For clarity and standard notation

76. Why are symbols like km and cm not followed by ‘s’ for plural?

To maintain consistency in SI unit notation

77. What material is suitable for making a metre scale?

Steel or plywood

78. What is the motion of a heavy box being pushed?

Linear motion

79. What type of motion does a whirling eraser tied to a thread exhibit?

Circular motion

80. What is periodic motion?

Motion that repeats after a fixed interval of time

81. Give an example of linear motion from Activity 5.3.

Eraser dropping from a height

82. Give an example of circular motion from Activity 5.4.

Whirling eraser tied to a thread

83. Give an example of oscillatory motion from Activity 5.5.

Eraser swinging to and fro on a thread

84. What type of motion does a rollercoaster ball exhibit from point A to B in Fig. 5.19?

Linear motion (straight downward path)

85. What type of motion does a rollercoaster ball exhibit from point B to C in Fig. 5.19?

Circular motion (curved loop)

86. What type of motion does a rollercoaster ball exhibit from point C to D in Fig. 5.19?

Linear motion (straight path)

87. Why is cloth not suitable for a metre scale?

It is flexible and may stretch, causing inaccuracies

88. What is the purpose of kilometre stones on roads?

To indicate distance to a reference point (e.g., a city)

89. How can you measure the thickness of a single page?

Measure a stack of pages and divide by the number of pages

90. What ancient Indian unit was used for large distances?

Yojana

91. What does a full stop after a unit symbol indicate?

The end of a sentence

92. What is the motion of a bicycle wheel while riding?

Circular motion

93. What is the motion of a bicycle moving straight on a road?

Linear motion

94. How many handspans did Hardeep measure for the table in Table 5.1?

14

95. What was the reference point for drawing the Kabaddi court lines?

A chosen point on the ground

96. What type of motion does a pendulum clock exhibit?

Oscillatory motion

97. Why is a 15-cm scale suitable for measuring an eraser’s length?

It is appropriate for small lengths and has millimetre precision

98. What does a decreasing kilometre stone reading indicate?

Getting closer to the reference point

99. What is one object from Table 5.3 that is at rest?

Tree

100. What is one object from Table 5.3 that is in motion?

Cow grazing in the field