Heat

Question 0

What happens when we heat a solid liquid or gas

Answer 0

It expands

Question 1

Heat

Answer 1

Is a form of energy

Question 2

What happens when we cool a solid liquid or gas

Answer 2

It contracts

Question 3

Heat transfer

Answer 3

• Convection
• Conduction
• Radiation

Question 4

Conduction

Answer 4

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

Question 5

Convection

Answer 5

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

Question 6

Radiation

Answer 6

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

Question 7

Conductor

Answer 7

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

Question 8

Insulator

Answer 8

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

Question 9

To show that a solid expands when Heated and contract when cooled

Answer 9

Ball and ring apparatus

Question 10

Air

Answer 10

Is a good insulator keeps animals warm is trapped by the fur and help to insulate the animal

Question 11

Layers

Answer 11

The hairs on our arms are not very good at keeping us warm if we wear layers of clothes air is trapped to keep us warm.

Question 12

Winds are formed by convection

Answer 12

The sun heats the earth
This cause hot air to rise
As the hot air rises it cools and then sinks down to the ground

Question 13

Temperature

Answer 13

A measure how hot an object is

Question 14

Thermometer

Answer 14

The liquid in the thermometer will expand and rise when heated and will contract and fall when cooled

Question 15

Boiling point of water

Answer 15

100°C

Question 16

Freezing point of water

Answer 16

0°C

Question 17

Melting point

Answer 17

Is when a solid turns to a liquid

Question 18

Boiling point

Answer 18

Is when a liquid turns to a gas

Question 19

Freezing point

Answer 19

Is when a liquid turns to a solid

Question 20

Condensation

Answer 20

Is a gas turning to a liquid

Question 21

Evaporation

Answer 21

Is when a liquid turns to a gas

Question 22

Pressure and boiling point

A kettle will normally boil at 100°C but will boil at 70°C on top of Mt.Everest.

Answer 22

Atmospheric pressure is less so it is easier for the water vapour to escape.

Question 23

Latent heat

Answer 23

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

Question 24

Latent heat of fusion

Answer 24

Is used when a solid changes into a liquid

Question 25

Latent heat of vaporisation

Answer 25

Is used when a liquid changes to a gas

Question 26

Dull, black surface radiates

Answer 26

Heat better than a shinny surface

Question 27

Dull, black surface absorb

Answer 27

Heat better than a skinny surface

Question 28

When water is below 4°

Answer 28

It begins to expand

Question 29

The amount of heat in a substance depends on

Answer 29

Temperature mass and what it is made of e.g 200ml of water at 60°C has twice as much heat as 100ml of water at 60°C

Question 30

Boiling point of water

Answer 30

100°C

Question 31

Freezing point of water

Answer 31

0°C

Question 32

Melting point

Answer 32

Is when a solid turns to a liquid

Question 33

Boiling point

Answer 33

Is when a liquid turns to a gas

Question 34

Freezing point

Answer 34

Is when a liquid turns to a solid

Question 35

Condensation

Answer 35

Is a gas turning to a liquid

Question 36

Evaporation

Answer 36

Is when a liquid turns to a gas

Question 37

Pressure and boiling point | A kettle will normally boil at 100°C but will boil at 70°C on top of Mt.Everest.

Answer 37

Atmospheric pressure is less so it is easier for the water vapour to escape.

Question 38

Latent heat

Answer 38

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

Question 39

Latent heat of fusion

Answer 39

Is used when a solid changes into a liquid

Question 40

Latent heat of vaporisation

Answer 40

Is used when a liquid changes to a gas

Question 41

Dull, black surface radiates

Answer 41

Heat better than a shinny surface

Question 42

Dull, black surface absorb

Answer 42

Heat better than a skinny surface

Question 43

When water is below 4°

Answer 43

It begins to expand

Question 44

The amount of heat in a substance depends on

Answer 44

Temperature mass and what it is made of e.g 200ml of water at 60°C has twice as much heat as 100ml of water at 60°C