1 Energy Transfer by Heating Flashcards

You may prefer our related Brainscape-certified flashcards:
1
Q

What substances can convection happen in?

A

Convection can happen in liquids and gases.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is a fluid? (JR)

A

A liquid or a gas

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What makes metals efficient conductors? (JR)

A

Delocalised (Free) Electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the definition of specific heat capacity (JR)

A

The energy required to raise 1kg of a substance by 1°C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Name the four types of heat transfer

A

Conduction
Radiation
Convection
Evaporatuon

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What type of radiation do all hot objects emit?

A

Infra-red radiation.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What are the best absorbers of thermal radiation?

A

Black, dull surfaces.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How does heat pass through a single pane of window glass?

A

By conduction and radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is a property of a liquid?

.

A

They cannot be compressed because their particles are close together.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What type of surface emits the most heat, in thermal radiation?

A

Matte/Dull black

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Explain the process of convection.

A

As a fluid is heated, the particles gain heat energy which means the spread out, becoming less dense, lighter and so they rise. As the particles begin to cool they get closer together and therefore denser and heavier, so they sink.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is a vacuum? Give an example.

A

An area with NO particles.

Space would be an example.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Why would it be best for someone in a hot country to wear white rather than black?

A

White absorbs the least heat, keeping them cooler.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Explain the process of conduction.

A

One particle gains heat energy and begins to vibrate. The vibrating particle then collides with the next particle, transferring this heat energy along.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly