Part 1-

1. The kind of molecular motion that mostly relates to the temperature of a substance is

A) Translational motion.
B) Rotational motion.
C) Vibrational motion.
D) all about equally

2. When comparing a large iceberg to a hot cup of coffee, which statement is NOT correct:

a) the iceberg has more internal energy than the hot coffee
b) heat will flow from the iceberg to the hot coffee
c) the coffee has more translational kinetic energy than the iceberg

3. The quantity of heat that a substance can transfer relates to its

A) mass
B) specific heat rapacity
C) change in Its temperature.
D) all of the above

4. The specific heat capacity Is highest for substances that absorb or release large quantities of heat for correspondingly

A) small temperature changes.
B) large temperature changes.
C) small or large changes in temperature.
D) none of the above

5. A substance that cools down faster than others has a

A) low specific heat capacity.
B) high specific heat capacity.
C) either of these
D) neither of these

6. When most substances are heated, molecules inside move faster and take up more space, resulting in thermal

A) bending.
B) expansion.
C) contraction.
D) heat.

7. Ice has a lower density than water because ice

A) molecules are more compact in the solid state.
B) molecules vibrate at lower rates than water molecules.
C) is composed of open-structured crystals.
D) density decreases with decreasing temperature.

8. If the temperature of a sample of water at 4°C is slightly increased, its volume

A) increases.
B) decreases.
C) remains the same.

9. When water at 4°C is heated it expands. If it is instead cooled it will

A) contracts.
B) also expand.
C) neither contracts nor expands.

10. On a cold day your feet feel warmer on a rug than on a tile floor because a rug

A) is usually warmer than tile.
B) is a poorer conductor.
C) for the same mass has more internal energy than tile.
D) all of the above
E) none of the above

11. If a volume of air is warmed. it expands and tends to

A) warm.
B) cool.
C) neither of these

12. The form of heat transfer that doesn't depend on a medium is

A) conduction.
B) convection.
C) radiation.
D) all of the above

13. The higher the temperature of an object. the

A) longer the wavelengths it radiates.
B) shorter the wavelengths it radiates.
C) makes no difference In the wavelengths it radiates

14. Object that radiate relatively well

A) absorb radiation relatively well.
B) reflect radiation relatively well.
C) both of these
D) neither of these

15. Which body glows with electromagnetic waves?

A) the Sun
B) the Earth
C) you and your classmates
D) all of the above

16. Glass in a florist's greenhouse acts as a one-way valve in that it

A) lets light energy flow only in one direction.
B) cuts off unwanted radiation.
C) allows high-frequency waves in and blocks low-frequency waves exiting.
D) is transparent only to lower-frequency waves.

17. Compared with radiation from the Sun. terrestrial radiation has a lower

a) wavelength b) frequency c) both d) neither

18. The process of boiling water tends to

a) warm the water b) cool the water c) both d) neither

19. The reason that evaporation is a cooling process is

A) radiation of heat during the process.
B) due to conduction and convection
C) the more energetic molecules escape the liquid.
D) all 01 the above
E) none of the above

20. A boy scout will be burned more severely by

A) 100 g of water at 100°C
B) 100 g of steam at 100°C.
C) both about equally
D) neither of these

21. When heat is added to boiling water, its temperature

A) increases.
B) decreases.
C) remains unchanged.
D) none of the above

22. When a solid is changed to a liquid, the solid

A) releases energy.
B) absorbs energy.
C) both of these
D) neither of these

23. When a vapor cnndenses, energy Is

A) absorbed by the vapor.
B) released from the vapor.
C) both of these
D) Neither of these

24. As a block oiler at 0°C melts, the block absorbs energy

A) and decreases in temperature.
B) and increases in temperature.
C) without a temperature change.
D) all of the above
E) none of the above

25. To Increase the temperature of 50 grams of water by 2 Celsius degrees requires

A) 0.04 calorie. 8) 2 calories.
C) 4.19 calories.
D) 25 calories.
E) 100 calories.

26. Tn turn 50 grams of boiling water to steam requires

A) 50 calories.
B) 500 calories
C) 540 calories.
D) more than 540 raki, les
F) none of the above

27. An equal amount of 0°C air that is twice as hot has a temperature of

A) 0°C.
B) 64°C
C) 100°C.
D) 273°C.
E) none of the above

28. The change in internal energy of adding 100 joules to a system that does 60 joules of

A) 0 J.
B) 40 J.
C) 60 J.
D) 100 J.
E) none of the above

29. When you compress air with a tire pump, the air temperature in the tire

A) increases.
B) decreases.
C) remains unaffected.
D) none of the above

30. An adiabatic process is characterized by the absence of

A) entropy.
B) pressure change.
C) heat exchange.
D) temperature change
E) none of the above

Part 2-

1) A good heat conductor is

A) a poor insulator.
B) a good insulator.
C) neither of these

2) Because of trapped air inside, snow is a

A) good conductor.
B) good insulator.
C) both a good insulator and a poor conductor.
D) none of the above

3) On a cold day your feet feel warmer on a rug than on a tile floor because a rug

A) is usually warmer than tile.
B) is a poorer conductor.
C) for the same mass has more internal energy than tile.
D) all of the above
E) none of the above

4) When a volume of air is compressed, air temperature

A) increases.
B) decreases.
C) neither of these

5) There is snow at high elevations, or on the tops of mountains, because:

A) when hot air rises, it heats up more
B) when hot air rises, it cools
C) when hot air rises, it remains the same temperature

6) The form of heat transfer that doesn't depend on a medium is

A) conduction.
B) convection.
C) radiation.
D) all of the above

7) The higher the temperature of an object, the

A) longer the wavelengths it radiates.
B) shorter the wavelengths it radiates.
C) makes no difference in the wavelengths it radiates

8) If a pizza radiates more energy than it absorbs, its temperature

A) decreases.
B) is unaffected.
C) increases.
D) none of the above

9) A good absorber of radiation is a

A) good emitter of radiation.
B) poor emitter of radiation.
C) good reflector.
D) none of the above

10) A Thermos bottle has double glass walls, which creates a vacuum, and silver coating on the glass surfaces that face each other. The silver coating reduces energy transfer by

A) Conduction.
B) Convection.
C) Radiation
D) All of the above.
E) None of the above.