Heat Flashcards

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1
Q

Is the following statement True or False?

Heat is a form of energy.

A

True.

Heat is a form of energy.

2
Q

What does temperature mean?

A

Temperature is a measure of how or cold something is.

3
Q

What units is temperature usually measured in?

A

Temperature is measured in degrees Celsius.

4
Q

At what temperature does water freeze?

A

Water freezes at 0 degrees Celcius

5
Q

What is the temperature of boiling water?

A

Water boils at 100 degrees Celcius.

6
Q

Name the 3 ways heat can travel.

A

Heat can travel by convection, conduction or radiation.

7
Q

Does conduction occur in solids, liquids and/or gases?

A

Conduction occurs only in solids.

8
Q

How does heat energy travel during conduction?

A

Heat passes from particle to particle during conduction.

9
Q

Why are saucepans with plastic handles safer than those with metal handles?

A

Saucepans with plastic handle are safer than saucepans with metal handles because plastic is a poor heat conductor but metals are good heat conductors. With plastic handles the user is less likely to get burned.

10
Q

What are poor conductors called?

A

Poor conductors are called Insulators.

11
Q

What type of substances can convection occur in?

A

Convection occurs in liquids and gases.

12
Q

Is the following statement True or False?

Convection is when hot particles move down and cold particles move up.

A

False.

Convection is when hot particles move up and cold particles move down.

13
Q

Which type of substances can radiation occur in?

A

Radiation occurs through all substances like solids, liquids and gases. It can even travel through no substance (a vacuum) because radiation does not need particles to travel.

14
Q

Is the following statement True or False?

Dark colours absorb (take in) more radiation than light colours.

A

True.

Dark colours absorb (take in) more radiation than light colours.

15
Q

What is a thermometer used for?

A

A thermometer measures temperature.

16
Q

What advice would you give to someone who wanted to reduce heat loss in their house?

A

Any of the following:

Install double glazing in the windows.

Insulate the roof space of the house.

Use draft excluders at the bottom of doors.

Have carpeted floors instead of wooden floors.

Any other sensible suggestions….

17
Q

What is heat radiation known as?

A