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Biblioteka

Savvas 7th Grade Thermal Energy and Heat Test

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Pitanje 1
1.

The movement of thermal energy from a warmer object to a cooler object is called

Pitanje 2
2.

The transfer of energy by electromagnetic waves is called

Pitanje 3
3.

Heat transfer occurs

Pitanje 4
4.

Heated air moves from baseboard heaters to the rest of a room in a process called

Pitanje 5
5.

A measure of the average kinetic energy of the individual particles in an object is called

Pitanje 6
6.

Malia burned herself when she picked up a hot iron skillet from the stove. What method of heat transfer caused the burn?

Pitanje 7
7.

The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 kelvin is called its

Pitanje 8
8.

Most of the world uses this temperature scale

Pitanje 9
9.

A material that conducts heat poorly is called a(n)

Pitanje 10
10.

Which of these is a good conductor?

Pitanje 11
11.
Pitanje 12
12.
Pitanje 13
13.
Pitanje 14
14.
Pitanje 15
15.
Pitanje 16
16.
Pitanje 17
17.

At absolute zero, the particles in an object have no kinetic energy.

Pitanje 18
18.

A student lists three temperature measurements: 100°F, 100°C, and 100 K. Of the three measurements, 100 K is the highest temperature.

Pitanje 19
19.

The more particles an object has at a given temperature, the more thermal energy it has.

Pitanje 20
20.

You feel the warm glow of a bonfire. This is an example of radiation heat transfer.

Pitanje 21
21.

During conduction heat is transferred by the movement of currents within a fluid.

Pitanje 22
22.

Trapped air is a good conductor because it reduces heat transfer.

Pitanje 23
23.

As most substances are cooled, they expand.

Pitanje 24
24.

On the Fahrenheit temperature scale, water boils at 212 degrees.

Pitanje 25
25.

Specific heat is measured in joules.

Pitanje 26
26.

Which is a larger change in temperature: a change of 1 Celsius degree or 1 Fahrenheit degree? Explain.

Pitanje 27
27.

What is the difference between thermal energy and heat?

Pitanje 28
28.

Explain the role of density in the formation of convection currents.

Pitanje 29
29.

The specific heat of foam is 1200J(kg-K). How much heat does it take to raise the temperature of 1 kg of foam by 2 K?

Hint: Remember the Energy Change Formula