Energy

Question 0

Unit of energy

Answer 0

Joules

Question 1

Energy

Answer 1

Is the ability to do work

Question 2

Potential energy

Answer 2

This is stored energy thats waiting to do work such as a coiled spring or elastic band

Question 3

Kinetic energy

Answer 3

The energy that moving things have ie a windmill turning or a car moving

Question 4

Heat energy

Answer 4

Heat is energy because it can cause things to move e.g. hot air balloon and steam engine

Question 5

Light energy

Answer 5

Light can move things in a Crookes Radiometer or in a solar powered calculator, plants use light to make food

Question 6

Sound energy

Answer 6

If you put your head near a loudspeaker you can feel that air is being moved by sound energy

Question 7

Electrical energy

Answer 7

Electrical energy can make things like extractor fans move. It is the flow of electrons around a circuit

Question 8

Chemical energy

Answer 8

This is the type of energy stored in fuels such as coal and oil it is also stored in the food we eat and in batteries

Question 9

Nuclear energy

Answer 9

This energy is stored in the nucleus of atoms , the energy that comes from the sun

Question 10

The law of conservation of energy

Answer 10

Energy cannot be created or destroyed it can only be changed (converted) from one form to another

Question 11

Circuits

Answer 11

A circuit is made up of a battery , some wires and different types of equipment and can be used to observe energy conversion

Question 12

Renewable energy

Answer 12

Constantly being replaced be nature

Question 13

Renewable energy sources

Answer 13

Solar energy, hydro electric energy, wind energy, wave energy, biomass energy(the use of plants to make fuel) and geothermal energy(metal buried underground heats up),

Question 14

Advantages of renewable energy

Answer 14

Renewable energy does not cause pollution, they will not run out and they are fairly safe to use.

Question 15

Disadvantages of renewable energy

Answer 15

They are expensive to develop and set up and more research needs to be done into how to make good sources of energy

Question 16

Non renewable energy

Answer 16

Can not be replaced and will run out

Question 17

Non renewable energy sources

Answer 17

Fossil fuels (oil, coal, gas and turf)

Question 18

Disadvantage of fossil fuels

Answer 18

They cause pollution and damage to the atmosphere

Question 19

The sun as a source of all our energy

Answer 19

The sun allows plants to make food and heats the oceans and air creating wind and currents

Question 20

Nuclear energy

Answer 20

When the nucleus of an atom split large amounts of energy are released from it

Question 21

Advantages of nuclear energy

Answer 21

Nuclear energy can kill cancer cells, sterilise food, produce electricity and it will not run out like fossil fuels

Question 22

Disadvantages of nuclear energy

Answer 22

The waste products are harmful, the waste products last for a very long time and if the nuclear energy gets out of control huge explosions can happen