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AP Physics II - Thermodynamics

Total questions: 22

Worksheet time: 2hrs 45mins

Name

Class

Date

Thermodynamics is the study of what?

The transfer of energy

The creation of energy

The speed of reactions

The affect of heat on the speed of a reaction

Temperature is a measure of the...

total energy in a substance

total kinetic energy in a substance

average potential energy in a substance

average kinetic energy of molecules in a substance

A substance with a high specific heat:

Is always extremely hot.

Requires a lot of energy to become hot.

Is not heavy.

Does not requires a lot of energy to become hot.

What is the correct formula to convert Celsius to Kelvin?

K=C-273

K=C+273

K=C-100

K=C+100

Heat is measured in

joules

grams

degrees celcius

20 g of water. specific heat of water is 4.18 J/g°C. temperature changes from 25° C to 20° C, how much heat energy (Q) moves from the water to the surroundings?

418 Joules

209 J

83 J

4.18 J

Specific heat of water is 4.18 J g^-1°C^-1. Specific heat of wood is 1.760 J g^-1°C^-1 What material needs more heat energy to raise the temperature?

Water

Wood

Both are same

In our equations, what does "ΔT" represent?

mass

change in temperature

latent heat

specific heat

The symbol for specific heat is .......

∆T

10.

The specific heat(c) of copper is 0.39 J/g °C. What is the temperature change(∆t) when 100 Joules of heat(Q) is added to 20 grams?

12.82 °C

24.12°C

351 °C

11.

Copper, Stainless Steel, Carbon Steel, and Zinc were all heated using the same thermal energy (heat). What material would be the COOLEST after being heated (lowest temperature)?

Copper

Carbon Steel

Zinc

Stainless Steel

12.

A pot of 2400g of water at a temperature of 25˚C is heated on a stove until the water boils (100˚C). The specific heat of water is 4.18 J/(g˚C).
Determine the heat energy needed to heat the water in the pot to boiling.

133.76J

43,062.2J

752,400J

1,003,200J

13.

How much heat is needed to change 12 grams of ice at 0 ºC to 12 grams of water at 0ºC?

960 cal

80 cal

0 cal

96 cal

14.

How much heat is needed to change 12 grams of water at 100 ºC to 12 grams of water vapor at 100ºC?

648 cal

540 cal

6480 cal

732 cal

15.

How much heat is needed to raise the temperature of 45 grams of water at 5 ºC to 68ºC?

24300 cal

3060 cal

3282 cal

2835 cal

16.

How much heat is needed to change the temperature of 315 grams of ice at -20 ºC to water at 60ºC?

25200 cal

28350 cal

47250 cal

18900 cal

17.

Many objects, such as train tracks and road joints, are specifically designed to allow extra space for ...

thermal energy

specific heat

thermal expansion

conductors

18.

The liquid in the thermometer rises when it is placed in the hot water because ___________.

it gains heat from the hot water and expands.

loses heat from the hot water and contracts.

the surrounding air is too warm.

the liquid is boiling.

19.

Calculate the change in length of a 100mm aluminium bar that has increased in temperature by 55⁰C.
Take the coefficient of expansion to be 25 x 10^-6

0.258mm

0.1375mm

1.23mm

1.37mm

20.

Calculate the change in temperature of an 900mm aluminium bar, that has increased in length to 901.035mm.
α = 25 x 10^-6

12^oC

34.5^oC

57^oC

46^oC

21.

A 15.75-g piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.

0.46 J/gx^oC

1.654 J/gx^oC

2,567,446.875 J/gx^oC

22.

An incadescent light bulb emits 120 W of radiation. If its temperature is 3000 K, what is the surface area of the Fillament?

100 %

AP Physics II - Thermodynamics

Total questions: 22

Worksheet time: 2hrs 45mins

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