As water heats up at the bottom of a tea kettle, the water rises and is replaced with cooler sinking water... causing the water to mix and heat evenly.

This is an example of which of the following?

Question 2 options:

	Radiation
	Convection
	Conduction
	Specific Heat

Which of the following most accurately describes what is taking place when ice is melting?

Question 3 options:

	Heat is being added to the ice, causing it to melt. This happens as the temperature remains constant.
	The radiation from the ice cube causes the temperature to remain constant as the ice melts.
	The specific heat of the water is changing, causing the temperature to increase as the ice is melting.
	Heat is being removed from the ice, causing the ice to melt. This happens as the temperature increases.

Question 4(1 point)

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Which of the following statements accurately describes a difference between copper and water?

Question 4 options:

	Water has a higher heat capacity... therefore, it requires more heat to change its temperature.
	Copper has a higher heat capacity... therefore, it requires more heat to change its temperature.
	Water and copper have the same heat capacity... therefore, they require the same amount of heat to change their temperature.

Question 5(1 point)

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You've been asked to design an air mattress to insulate a person from the cold ground. Based on values of thermal conductivity, which of the following would provide the best insulation?

Question 5 options:

	Landscape bricks
	An air mattress
	An aluminum sheet
	A sheet of glass

Question 6(1 point)

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When a substance is undergoing a phase change, temperature changes.

Question 6 options:

	True
	False

Question 7(1 point)

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What takesplace at the evaporating coils inside the refrigerator?

Question 7 options:

	Liquid refrigerant releases heat inside the refrigerator compartment increasing temperature in the refrigerator compartment.
	Liquid refrigerant absorbs heat which cools the temperature inside the refrigerator compartment.
	Refrigerant in a gas phase is pressurized back to a liquid and heat is released to the atmosphere behind the refrigerator.
	Ice in the refrigerator evaporates and reduces the temperature in the refrigerator compartment.

Question 8(1 point)

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When a gas is changed to a liquid state, the gas

Question 8 options:

	releases energy
	both releases and absorbs energy
	neither releases or absorbs energy
	absorbs energy

Question 9(1 point)

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When heat is added toboilingwater,what happens to the temperature?

Question 9 options:

	increases
	decreases
	does not change

Question 10(1 point)

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Based on your understanding of heat flow and energy transfer in phase changes, what would happen to the surrounding air when snow melts?

Question 10 options:

	surrounding air would warm
	surrounding air would cool
	surrounding air neither warms nor cools

Question 11(1 point)

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What would happen if you run a refrigerator in a closed room with the refrigerator door open?

Question 11 options:

	the temperature will decrease
	the temperature will increase
	the temperature will remain constant