Unit 8 Transmission of Heat | Class 7 General Science Quiz

Unit 8 Transmission of Heat | Class 7 General Science Quiz

Class 7 General Science, Chapter # 8, MCQs Quiz with answers

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Unit 8 Transmission of Heat | Class 7 General Science

Online test MCQs preparation for ETEA, NTS, KPPSC, PPSC, FPSC or any type of competitive Exams as well as for kpk teaching posts,

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1. Coastal breeze is also produced by ____

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2.  When a liquid is heated, the molecules at the ____ move with stronger vibrations.

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3. Thermal energy moves from ____

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4. Convection occurs only in:

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5. Copper conducts heat ___ times better than iron.

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6. Some materials do not  allow heat to flow easily are called:

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7. The movement of molecule in an object produces _____

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8. Convection currents are used to ____ our homes in daily life.

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9. There is a sea breeze during the:

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10. Thermal energy is the energy that comes from ____

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11. Sun heat reaches us through a mode of transfer called:

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12. ____ occurs only in liquid and gases.

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13. A hotter body radiates ____ than an identical colder body.

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14. Riding ____ are great energy savers for birds when they can find them.

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15. Birds take advantage of upward movement of air called:

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16. Many large birds wait on the ground until ____ in the morning for the thermals to form.

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17.  Stone is a better conductor of heat than a

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18. During the daytime, the sun shines equally on:

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19. At night the land cools more quickly than the:

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20. Good absorber is a:

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21. The solar heat energy reaching the earth each year is more than ____ times than the world’s energy needs.

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22. Thermal energy transfer or moves between objects in ____ different ways:

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23. The heat and energy transfer from a hotter place to a colder place with or without having a material medium in between, is called:

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24. Land breeze blow at ____

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25. Coastal breeze is produced by:

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26. Heat transfer from a hotter place to a colder place by actual movement of the particles of the medium is known as

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27. The heat in a metal rod flows by the process of:

 

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28. A radiation in a room heats up the room by ____

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29. A vacuum flask or a thermos flask is a type of flask that aims to stop:

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30. Land heats up more quickly than the:

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31. The faster the molecule are moving inside an object, the ____ the object will be.

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32. Black or dark coloured clothes are worn in cold climates because dark colour is a poor reflector and a:

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33. White clothes are worn in hot climates because white is a good reflector and a:

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34. ____ occurs when thermal energy is transferred between two objects that are touching each other.

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35. Poor absorber is a:

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36. Convection requires particles to be free to move, so it cannot take place in:

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37. Some material allow heat to conduct through them easily are called:

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38. All bodies, whether cold or hot radiate ____

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