# Chapter 4 Thermal Energy Part 2: Question Preview (ID: 31210)

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When temperature increases, average _____ increases
a) potential energy
b) gravitational potential energy
c) kinetic energy
d) total energy

Every material has its own specific heat. It is easy to change the temperature of a material with _____.
a) high specific heat
b) conduction
c) low specific heat
d) insulation

You reach a bottle of water out of the refrigerator. Your hand gets cold because of which of the following?
a) conduction
b) convection
d) kinetic energy

The ocean is cold even in summer because water has _____
a) high specific heat
b) low specific heat
c) conduction
d) insulation

A liquid thermometer works because liquid ____ when warmed.
a) expands
b) contracts
c) solidifies
d) condenses

Which part of the internal combustion engine transforms thermal energy into mechanical energy?
a) cylinder
b) exhaust valve
c) piston
d) spark plug

Temperature is a measure of ____ of the particles in an object.
a) the difference between the potential and kinetic energy
b) the sum of the potential and kinetic energy
c) the average potential energy
d) the average kinetic energy

Which part of a refrigerator causes the coolant to change from a liquid to a gas?
a) compressor
b) condenser coils
c) coolant vapor
d) expansion valve

To check if a stovetop is hot, you place your hand near the top of the stove and feel that it is warm without touching it. You can feel the heat from the stovetop because of _____.
a) conduction
b) convection
d) kinetic energy

A bimetallic coil is used in a thermostat because _____.
a) the two metals heat and cool at different rates
b) it is cheap
c) a single metal would be too small
d) the two metals have different roles in the operation of the machine

A heat engine ____.
a) changes mechanical energy to thermal energy
b) changes mechanical energy into electrical energy
c) changes thermal energy into mechanical energy
d) changes kinetic energy into thermal energy

Bars of different metals are all heated to 100°C to determine how their volume and length would be affected. Which statement describes the most likely outcome of this experiment?
a) All of the volumes change and so do their lengths.
b) All of the volumes change, but each substance has the same length
c) Only some of the volumes change with the length being the same.
d) All of the volumes change the same amount and the lengths remain constant.

Which of the following is NOT an example of a heating appliance?
a) steam engine
b) curling iron
c) coffeemaker
d) clothes iron

In years past, people would put a hot water bottle in bed with them to help warm their feet. The transfer of the warmth from the water bottle to their feet is called _____.
a) heat
b) temperature
c) thermal energy
d) kinetic energy

When a pot of water is put on a stove, the water at the top gets hot primarily by ____.
b) convection
c) conduction
d) condensation

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