Heat

Question 1

Solids, liquids and gases

Answer 1

When heated

Question 2

The unit of energy

Answer 2

Is the joule (J)

Question 3

Heat

Answer 3

Is a form of energy

Question 4

Water

Answer 4

Begins to expand when cooled below 4 degrees Celsius

Question 5

Bimetallic strip

Answer 5

Shows that not all metals expand at the same rate, change

E.G. thermostats in heating or an iron

Question 6

Convention

Answer 6

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

Question 7

Radiation

Answer 7

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 8

Conduction

Answer 8

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

Question 8

Conduction

Answer 8

Is the method by which heat travels from particle to particle through a solid

Question 9

Conductor

Answer 9

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

Question 10

Insulator

Answer 10

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

Question 11

Air

Answer 11

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

Question 12

Layers

Answer 12

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 13

Temperature

Answer 13

A measure how hot an object is

Question 14

Temperature is measured

Answer 14

With a thermometer

Question 15

We deal with 2 types of thermometers

Answer 15

Mercury thermometer and alcohol thermometer

Question 16

Temperature is measured

Answer 16

Between 0 and 100C

Question 18

Conductor

Answer 18

Something that’s allows energy, heat flows through it E.G. Metal is a good conductor

Question 19

Insulator

Answer 19

Is a substance that doesn’t allow heat to flow through it easily E.G. Plastic

Question 20

Air

Answer 20

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

Question 21

Layers

Answer 21

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

Question 22

Radiation

Answer 22

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 23

Radiation can

Answer 23

A dull, black surface radiates and absorbs heat better than a shiny silver surface

Question 24

Low pressure

Answer 24

Lowers the boiling point

Question 25

High pressure

Answer 25

Raises the boiling point

Question 26

Melting points

Answer 26

Is when a solid turns to a liquid.

Question 27

Boiling point

Answer 27

Is when a liquid turns to a gas

Question 28

Freezing point

Answer 28

Is when a liquid turns to a solid.

Question 29

Condensation

Answer 29

Is a gas turning to a liquid

Question 30

Latent heat

Answer 30

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

Question 31

Latent heat of fusion

Answer 31

Is used when a solid changes into a liquid

Question 32

Latent heat of vaporisation

Answer 32

Is used when a liquid changes to a gas

Question 33

Radiation can

Answer 33

A dull black surface radiates and absorbs heat better than a shiny silver surface.