Heat

Question 1

Heat

Answer 1

Form of energy

Question 2

The unit

Answer 2

Is the Jewel

Question 3

Solids liquids and gases expand

Answer 3

When heated

Question 4

Solids liquids and gases contract

Answer 4

When cooled

Question 5

Bimetallic strip

Answer 5

The different metals will expand and contract at different rates due to their different molecular properties

Question 6

Water

Answer 6

Water begins to expand when cooled below 4 degrees Celsius

Question 7

Conduction

Answer 7

Heat travels from particle to particle along a substance , normally a solid

Question 8

Convection

Answer 8

Heat travels through a fluid ( liquid or a gas) when particles move and carry the heat

Question 9

Radiation

Answer 9

Heat travels from a hot object without the need for a medium, does not need a solid ,liquid or gas to go through , will flow through a vacuum

Question 10

Conductor

Answer 10

Something that allows energy e.g heat to flow through it .e.g metal is a good conductor

Question 11

Insulation

Answer 11

Is a substance that doesn’t allow heat to flow through it easily e.g plastic

Question 12

Heat is a form of

Answer 12

Energy that is measured in joules

Question 13

Materials expand

Answer 13

When heated and contract when cooled

Question 14

Above 4*water

Answer 14

Behaves like other liquids

Question 15

Below 4• water

Answer 15

Behaves oppositely to other liquids

Question 16

Reducing pressure

Answer 16

Lowers the boiling point of water above 100•

Question 17

Temperature is a measure

Answer 17

Of the hotness of the body

Question 18

When heat causes a change

Answer 18

I’m state and not in temperature we call it latent

Question 19

When heat changes a solid

Answer 19

Without temperature we call it latent of heat and fusion

Question 20

When heat changes a liquid

Answer 20

To gas without change in temperature we call it vaporisation

Question 21

Heat can travel in 3 methods :

Answer 21

Conduction convention and radiation

Question 22

Insulators are

Answer 22

Materials that are poor conductors

Question 23

Radiation

Answer 23

Is the transfer of the heat from a hot object without the need of a medium.the sun transfers its energy through radiation

Question 24

Temperature

Answer 24

A measure of how hot the object is

Question 25

Temperture is measured

Answer 25

With a thermometer

Question 26

We deal with 2 types of a thermometer

Answer 26

A mercury thermometer and alcohol thermometer

Question 27

The liquid in the thermometers will

Answer 27

Expand and rise when heated and will contract and fall when cooled

Question 28

Temperature is measured

Answer 28

Between 0 and 100 degrees Celsius

Question 29

Melting point

Answer 29

when a solid turns to a liquid

Question 30

Boiling point

Answer 30

Is when a liquid turns to a gas

Question 31

Freezing joint

Answer 31

Is when a liquid turns to a solid

Question 32

Condensation

Answer 32

Is a gas turning to a liquid

Question 33

Latent heat

Answer 33

The heat taken or given out when a substance is changing state without a change in temperature

Question 34

Latent heat of fusion

Answer 34

Is used when a solid changes into a liquid

Question 35

Latent heat of vaporisation

Answer 35

Is used when a liquid changes to gas