Heat

Question 1

Solids, liquids and gases expand

Answer 1

When heated

Question 2

Solids, liquids and gases contract

Answer 2

When cooled

Question 3

The unit of energy is the

Answer 3

Joule

Question 4

Heat

Answer 4

Is a form of energy

Question 5

Water

Answer 5

Begins to expand below 4 degrees Celsius

Question 6

Bimetallic strip

Answer 6

Shows that not all metals expand at the same rate.

Question 7

Conduction

Answer 7

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

Question 8

Convection

Answer 8

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

Question 9

Radiation

Answer 9

Heat travels from a hot object no need for a medium,does not need a solid liquid or gas to go through,will flow through a vacuum

Question 10

Conduction

Answer 10

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

Question 11

Conductor

Answer 11

Something that allows energy e.g heat to flow through it e.g metals

Question 12

Insulator

Answer 12

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

Question 13

Air

Answer 13

Is ahold insulator keeps animals warm is trapped by the fur and helps to insulate the animal

Question 14

Layers

Answer 14

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

Question 15

Melting point

Answer 15

Is when a solid turns to a liquid

Question 16

Boiling point

Answer 16

Is when a liquid turns to a gas

Question 17

Freezing point

Answer 17

Is when liquid turns to a solid

Question 18

Condensation

Answer 18

Is a gas turning to a liquid

Question 19

Latent heat

Answer 19

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

Question 20

Listen heat of fusion

Answer 20

Is used when a solid changes into a liquid

Question 21

Later heat of vaporisation

Answer 21

Is used when liquid changes to a gas

Question 22

Radiation can

Answer 22

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