energy stores

Question 1

Chemical energy store

Answer 1

Energy that is transferred during a chemical reaction
- e.g foods, fuels

Question 2

Kinetic energy store

Answer 2

describes the energy of a moving object has due to it movement
e.g bouncing ball

Question 3

Gravitational potential energy

Answer 3

describes the energy an object has due to its height
- e.g a bungee jumper

Question 4

Thermal energy store

Answer 4

describes energy a substance has due to its temperature
- boiling wate

Question 5

Name the energy transfers

Answer 5

heating
sound/light waves
electric current
physical force

Question 6

Elastic potential energy

Answer 6

describes energy stored in an object due to its ability to be stretched/squashed
e.g a spring, sling shot

Question 7

Electric current

Answer 7

Transferring energy to an appliance

Question 8

Physical force

Answer 8

Moving an object (stretching)

Question 9

Explain the changes in energy stores of a torch

Answer 9

the battery contains chemical energy
this is transferred by an electric current
to the bulb where it emits light energy
it release heat energy which is dissipated

Question 10

Describe the energy changes in a kettle

Answer 10

electric current transfers energy into the kettles heating element
this transfers thermal energy to the store of the water

Question 11

The law of conservation of energy

Answer 11

energy cannot be created/ destroyed
- it can be transferred from one store to another