Heat

Question 1

Solids, liquids and gases

Answer 1

When heated

Question 2

Solids, liquids and gases

Answer 2

Contract when cooled

Question 3

What is the unit of energy

Answer 3

Joule

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 thermostat in heating or an iron

Question 6

Conduction

Answer 6

Heat travels from particle to particle along a substance

Question 7

Convection

Answer 7

Heat travels through a fluid when the particles move and carry heat

Question 8

Radiation

Answer 8

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 9

Insulator

Answer 9

Something that doesn’t allow heat to flow through it

Eg plastic

Question 10

Conductor

Answer 10

Something that allows energy eg heat to flow through it. Eg metal is a good conductor

Question 11

Air

Answer 11

is. A good insulator, keeps animals warm,is trapped by fur and helps to insulate animals

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 of how hot an object is

Measured with a thermometer

Question 14

We deal with two types of thermometer

Answer 14

Mercury thermometers and alcohols thermometer

Question 15

Heat

Answer 15

Is a form of energy