Answers

1  The amount of heat necessary to raise the temperature of 1 gram of water by 1°C is referred to as the  

A) calorie.

B) kilocalorie.

C) British thermal unit.

D) joule.

Answer: A

 

2  The measure of the average kinetic energy of individual molecules is referred to as  

A) internal energy.

B) thermal energy.

C) temperature.

D) heat.

Answer: C

 

3  A cup of water is scooped up from a swimming pool of water.  Compare the temperature T and the internal energy U of the water, in both the cup and the swimming pool.

A) TPool is greater than TCup, and the U is the same.

B) TPool is less than TCup, and the U is the same.

C) TPool is equal to TCup, and UPool is greater than UCup.

D) TPool is equal to TCup, and UPool is less than UCup.

Answer: C

 

4  An ideal gas at STP is first compressed until its volume is half the initial volume, and then it is allowed to expand until its pressure is half the initial pressure.  All of this is done while holding the temperature constant.  If the initial internal energy of the gas is U, the final internal energy of the gas will be

A) U.

B) U/3.

C) U/2.

D) 2U.

Answer: A

 

5  An ideal gas with internal energy U at 200°C is heated to 400°C.  Its internal energy then will be

A) still U.

B) 2 U.

C) 1.4 U.

D) 1.2 U.

Answer: C

 

6  The reason ocean temperatures do not vary drastically is that

A) water has a relatively high rate of heat conduction.

B) water is a good radiator.

C) water has a relatively high specific heat.

D) water is a poor heat conductor.

Answer: C