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Class 7 Science Chapter 3 Heat Quiz 17 (60 MCQs)

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1. Transfer of thermal energy through "space"
2. Roller coasters have gaps in the tracks so they can expand in hot weather due to
3. Water has a specific heat of 4184 J/Kg$^\circ$C. Wood has a specific heat of 1760 J/Kg$^\circ$C. What material needs more energy to raise the temperature 1$^\circ$C
4. This is a measure of the average kinetic energy of the particles of an object.
5. Heat is radiated back to space from earth as
6. The hotness of an object is determine by its
7. Ossi knows that convection is the transfer of heat energy. Which transfer of heat energy is made through convection?
8. If an ice cube is placed into a hot glass of hot chocolate, which statement is true?
9. A student has a candy bar in a coat pocket. The coat is hanging on the coat rack. When the student went to eat the candy for snack, it melted. Which question would BEST help determine the source of heat that caused the candy bar to melt?
10. What happens to the molecules of a substance when it is heated?
11. The specific heat is the amount of energy needed to raise the temperature one degree Celsius of 1 gram of a substance.
12. Betty knows that different types of energy are produced by many objects around the house, such as a light bulb.Which types of energy does the bulb give off?
13. A microwave oven uses which of the following to heat foods.
14. A measure of how hot or cold something is compared to a reference point is .....
15. Ryan rubs two sticks together quickly. When he stops rubbing the sticks, he notices that they are warm to touch where he rubbed them. Which type of energy has been produced?
16. Which one is filled in the bulb of a thermometer?
17. What is a transfer of heat energy by electromagnetic waves through space?
18. Tina is boiling water in a metal pot for a weather experiment. What is most likely the reason she would need to use a pot holder for moving the metal pot?
19. ..... is a tool used to measure temperature.
20. ..... is a force that slows things down and creates heat.
21. A substance can change state when enough heat energy is ..... to it or removed from it.
22. What unit do you use to measure specific latent heat?
23. A heat lamp warming up soil
24. Heat is the amount of energy in an object because of its .....
25. What is a transfer of heat energy by electromagnetic waves? (a)
26. Convert:-45.9 C to K:
27. The thermometer that measures the object is called .....
28. Metal pans have a low heat capacity. This means .....
29. Which type of heat transfer occurs through electromagnetic waves?
30. The heat from your hot chocolate moves to the cooler air surrounding it, causing your hot chocolate to cool down. What is this an example of?
31. If boiling water is taken to the dark side of the moon it will
32. The handle of a metal spoon warms up when it is placed in a hot bowl of soup because of
33. If 5.0 x 10$^{5}$ J of energy is absorbed by a block of ice when it is heated from-5$^{o}$C to 0$^{o}$C, find the mass of the ice. Given that the specific heat capacity of ice is 2.05 x 10$^{3}$ J kg$^{-1}$ $^{o}$C$^{-1}$ and the specific latent heat of fusion of ice is 3.34 x 10$^{5}$ J kg$^{-1}$.
34. A 0.3 g piece of copper is heated and fashioned into a bracelet. The amount of energy transferred by heat to the copper is 66, 300 J. If the specific heat of copper is 390 J/g $^{0}$C, what Is the change of the copper's temperature?
35. Why would aluminum foil be a good choice to wrap food that needs to be kept cool outside?
36. The heat lost or gained by a substance
37. The ..... zone lies just south of the Antarctic Circle
38. Rahul wonders why the level of Mercury should change at all when the bulb of the bulb of the thermometer is brought in contact with another object.
39. How does heat energy from the Sun reach Earth?
40. 1 calorie = ..... joule
41. On heating the Liquids show expansion in
42. Beth is learning about the properties of heat in science class. She knows that heat must flow to cause a change of temperature in a substance. Which of the following will cause the fastest change in temperature of an ice cube?
43. NAME THE ELEMENT USED IN THERMOMETER
44. Dew forms on a cool drink kept in air because
45. What is temperature scales that used to measure temperature?
46. Why do we wear sweaters in cold weather?
47. Lines of constant latitude or parallels
48. Evaporation occurs only .....
49. The increase in length of a metal rod depends on
50. Heat flows in solids generally through
51. How is energy from the Sun transferred?
52. How are heat from the sun and heat from a campfire alike?
53. Which of the following is the correct location of the temperate zone?
54. Heat flows through
55. A piece of silver is heated to 87.36 $^{o}$C and dumped into a calorimeter containing 65.86 g of water at a temperature of 24.03 $^{o}$C. Calculate the mass of this zinc sample if the final temperature of the zinc and water together 28.69 $^{o}$C. (Cp $_{(silver)}$ =.2350 J/g * $^{o}$C)
56. What device is used to automatically record (write down) changes in temperature?
57. ..... is the transfer of heat by the movement of a fluid.
58. If an 85.0 g sample of copper with a specific heat of 0.41 J/g$^\circ$C is cooled from 45$^\circ$C to 25$^\circ$C, how much energy will it lose?
59. Which statement describes how thermal energy moves?
60. Freezing is a heat ..... process.
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