Class VI Science Quiz: Materials Around Us

Part 1: Materials and Objects

1. What is a material?

Any substance used to create an object, like paper, wood, or metal

2. Name one material used to make a pot in the Harappan civilization.

Clay

3. What is terracotta?

Baked clay

4. What was the purpose of large storage jars in the Harappan civilization?

To store food grains, oil, or ghee

5. Name one object from Activity 6.1 that could be made of wood.

Table

6. Name one object from Activity 6.1 that could be made of plastic.

Water bottle

7. What material is a brick made of, according to Table 6.3?

Baked clay

8. Can an object be made from more than one material?

Yes

9. Give an example of an object made from multiple materials.

Pen (plastic, metal, ink)

10. Why are different materials used for different parts of a pen?

Based on their properties and the purpose of each part

Part 2: Properties of Materials - Appearance

11. What is meant by a lustrous appearance?

A shiny surface

12. Name one lustrous material.

Copper

13. Name one non-lustrous material.

Paper

14. Why might a metal lose its lustre?

Due to the effect of air and moisture

15. Are all shiny materials metals?

No, some are polished or coated with plastic or wax

16. What property was used to group materials in Activity 6.6?

Appearance (lustre, texture, colour)

17. Is aluminium foil lustrous or non-lustrous?

Lustrous

18. Is wood lustrous or non-lustrous?

Non-lustrous

19. What is the texture of a freshly cut piece of wood?

Rough

20. What is the texture of copper wire?

Smooth

Part 3: Properties of Materials - Hardness

21. What makes a material hard?

It is difficult to compress or scratch

22. What makes a material soft?

It is easy to compress or scratch

23. Is a brick hard or soft, according to Table 6.3?

Hard

24. Name one soft material from Activity 6.5.

Pillow (cotton or foam)

25. Is rubber harder or softer than iron?

Softer

26. Is a sponge harder or softer than rubber?

Softer

27. Can a metal key scratch a piece of chalk?

Yes

28. Can a piece of wood be scratched by a metal key?

Yes

29. Why is a cricket ball not used to play tennis?

It is made of different materials, affecting bounce and suitability

30. Which ball in Activity 6.4 likely bounces the highest?

Tennis ball

Part 4: Properties of Materials - Transparency

31. What are transparent materials?

Materials through which things can be seen clearly

32. Name one transparent material.

Glass

33. What are opaque materials?

Materials through which you cannot see at all

34. Name one opaque material.

Wood

35. What are translucent materials?

Materials through which objects can be seen but not clearly

36. Name one translucent material.

Frosted glass

37. What material did Ghulan hide behind in Fig. 6.5?

Opaque (wall)

38. What material did Sheeta hide behind in Fig. 6.5?

Opaque (tree)

39. What material did Sara hide behind in Fig. 6.5?

Translucent (frosted glass)

40. What material did Sheeta’s brother look through in Fig. 6.5?

Transparent (glass window)

Part 5: Properties of Materials - Solubility

41. What does it mean for a material to be soluble in water?

It dissolves completely in water

42. What does it mean for a material to be insoluble in water?

It does not dissolve in water

43. Is sugar soluble in water, according to Activity 6.7?

Yes

44. Is sand soluble in water, according to Activity 6.7?

No

45. What happens to salt when mixed in water?

It disappears (dissolves)

46. Is chalk powder soluble in water?

No

47. Is sawdust soluble in water?

No

48. Does oil dissolve in water?

No, it forms a separate layer

49. Does oxygen gas dissolve in water?

Yes

50. Why is water’s ability to dissolve materials important for living organisms?

It helps in bodily functions and supports aquatic life

Part 6: Properties of Materials - Mass and Volume

51. What property determines if an object is heavier or lighter?

Mass

52. Which has more mass: a cup of pebbles or a cup of water?

Pebbles

53. What is the SI unit of mass?

Kilogram (kg)

54. How is 7 kilograms written correctly?

7 kg

55. What does the volume of a material represent?

The space it occupies

56. What is the SI unit of volume?

Cubic metre (m³)

57. How is 500 millilitres written correctly?

500 mL

58. How many litres are in 1 cubic metre?

1000 L

59. Why was one tumbler half-filled and another fully filled in Activity 6.8?

Different amounts of water were poured

60. What indicates the volume of water in a drinking bottle?

Net quantity (e.g., 500 mL)

Part 7: Matter

61. What is matter?

Anything that occupies space and has mass

62. Is air considered matter?

Yes

63. Are all materials examples of matter?

Yes

64. What two properties define matter?

Mass and volume

65. Is water an example of matter?

Yes

66. Is a pebble an example of matter?

Yes

67. What unit is used to measure mass?

Kilogram (kg)

68. What unit is used to measure volume?

Litre (L) or cubic metre (m³)

69. Why can’t students sit when bags are on their seats?

Bags occupy space (volume)

70. Is weight the same as mass?

No, weight is sometimes used for mass in common language

Part 8: Classification

71. What is classification?

Arranging objects into groups based on common properties

72. Name one property used to classify objects in Activity 6.2.

Shape, colour, hardness, softness, shine, dullness, or material

73. Why is classification useful?

It helps study and observe patterns in properties

74. How are spices typically grouped in a kitchen?

Kept together in one corner

75. How are pulses and grains stored in a kitchen?

In a separate corner from spices

76. Why are transparent containers used in shops and homes?

To see contents clearly

77. Unscramble TREMAT and match it to its property.

Matter: Occupies space and has mass

78. Unscramble ULSBELO and match it to its property.

Soluble: Mixes completely in water

79. Unscramble TNERPASNART and match it to its property.

Transparent: Objects can be seen clearly through it

80. Unscramble ERUSTL and match it to its property.

Lustre: Shiny surface

Part 9: Historical Context

81. When was the earliest pottery found in the Indian subcontinent?

7,000 to 8,000 years ago

82. Where was the earliest pottery found?

Lahuradewa and Mehrgarh

83. What technique did the Sindhu-Sarasvati civilization develop around 4000 BCE?

Wheel-turned pottery

84. What colors were used in Harappan pottery designs?

Bright red surface with black designs

85. Where are Harappan pottery items exhibited?

National Museum, New Delhi

86. Name one property from Ayurveda used to describe materials.

Guru (heavy)

87. What is the opposite property of guru in Ayurveda?

Laghu (light)

88. What is the Ayurveda property for a smooth material?

Shlakshmana

89. What is the Ayurveda property for a rough material?

Khara

90. How many properties does Ayurveda use to describe matter?

20

Part 10: Application and Analysis

91. Is wood translucent while glass is opaque? (True/False)

False: Wood is opaque, glass is transparent

92. Does aluminium foil have lustre while an eraser does not? (True/False)

True

93. Does sugar dissolve in water while sawdust does not? (True/False)

True

94. Is an apple matter because it occupies no space and has mass? (True/False)

False: An apple occupies space and has mass

95. Which material is best for a chair that is hard and durable?

Iron

96. Which material is best for a lightweight chair?

Plastic

97. Which material for a chair does not feel cold in winter?

Wood

98. Which material for a chair can be cleaned easily?

Plastic

99. What material is suitable for a food waste container?

Plastic (durable, easy to clean)

100. Is air transparent and a wooden door opaque? (True/False)

True