Heat

Question 1

Effects of Heat

Answer 1

Solids,liquids, and gases expand when heated

Question 2

What happends when it cools

Answer 2

Solids, liquid, and gases contract when cooled

Question 3

Water

Answer 3

Water begins to expand when cooled below 4 degrees Celsius

Question 4

Bimetallic strip

Answer 4

The bimetallic strip shows that not all metals expand at the same rate , change e.g. Thermostats in heating or an iron

Question 5

Heat

Answer 5

Is a form of energy

Question 6

Conduction

Answer 6

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

Question 7

Convection

Answer 7

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

Conduction

Answer 9

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

Question 10

Conductor

Answer 10

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

Question 11

Insulator

Answer 11

Is a substance that doesn’t allow heat to flow through it easily eg plastic

Question 12

Air

Answer 12

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

Question 13

Layers

Answer 13

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