Chapter 14 Flashcards Preview

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Flashcards in Chapter 14 Deck (13):
1

What is temperature?

average kinetic energy of the particles of an object

2

What is conduction?

process by which heat moves from one end of a solid to another

3

What is specific heat?

the amount of energy required to raise the temperature of 1 kg of a substance by 1 Kelvin

4

What is condensation?

the change of a state that occurs when a gas becomes a liquid

5

What do heat engines convert thermal energy to?

mechanical energy

6

The temperature reading of zero on the Kelvin scale is equal to _____.

absolute

7

Heat transfer by _______ can occur in a vacuum.

radiation

8

What is an insulator?

a material that does not conduct heat well

9

What happens to the temperature of a substance when a substance melts?

remains the same

10

In what kind of combustion engine is the fuel burned inside the cylinder?

internal

11

What happens to the particles of a solid as the thermal energy of the solid increases?

the particles move faster and further apart

12

Explain how a convection current is formed when you heat a pot of water on the stove.

the water near the heat source is warmed, warm water expands and rises while cool water sinks into its place (convection current)

13

Will the temperature of a pond decrease if the air temperature decreases by 10° C? Explain.

No, air has a lower specific heat than water, loss of the same amount of thermal energy by the water will result in a smaller temperature drop