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Exam 5: Temperature and Heat

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Question 31

Multiple Choice

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Why do bridges have expansion joints?

A) They would buckle and crack otherwise.
B) to let water run off
C) to absorb vibrations due to traffic
D) for ease in construction

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Question 32

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A thermostat can work because of a bimetallic strip.

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Question 33

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The Eiffel tower in Paris is 300 meters tall on a cold day (T = - 5 degrees Celsius).What is its height on a hot day when the temperature is 35 degrees? (It is made of iron which has a coefficient of linear expansion of 0.000012 per degree Celsius. )

The specific heat capacity of copper is three times the specific heat capacity of lead.Equal masses of copper and lead are heated from room temperature to the temperature of boiling water.To achieve this,the amount of heat added to the copper is 3 times the amount of heat added to the lead.

When ice melts,its temperature

A device that makes use of a bimetallic strip is

The specific heat capacity of a substance is the amount of energy required to raise 1 kg of the substance by a temperature of

"Firewalkers" step on the hot ashes and coals from a wood fire without getting their feet burned.How might this be possible?

A bimetallic strip is usable as a thermometer because of the property of __________.

The internal energy of air can be increased by

A wood stove in the corner of a cabin causes the entire cabin to become heated because of heat conduction.

Natural processes tend to increase the __________ of thermodynamic systems.

Water is good for putting out fires because it has a very high latent heat of vaporization.

Three examples of a heat mover are __________,__________,and __________.

When water boils,its temperature __________.

Match each item with the correct statement below. -refrigerators,air conditioners,and heat pumps are examples

Air at a temperature of 32° F has a relative humidity of 60%.If the temperature of the same air rises to 40° F,the relative humidity

The dew point is the temperature at which a given humidity equals the saturation density.

The specific heat capacity of copper is three times the specific heat capacity of lead.Equal masses of copper and lead are heated from room temperature to the temperature of boiling water.To achieve this,the amount of heat added to the copper is __________ times the amount of heat added to the lead.

Internal energy in a system can be changed by