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

Stored energy that is just waiting to do work such as a coiled spring or a elastic band

Question 3

Kinetic energy

Answer 3

The energy that moving things I.e, a windmill turning or a car moving

Question 4

Heat energy

Answer 4

Heat is energy because it can cause things to move

Question 5

Hot air

Answer 5

Hot air causes a hot air balloon to rise , heat ina steam engine moves trains !

Question 6

Light energy

Answer 6

Light can move in a crooked radiometer or ina solar powered calculator, plants use
Ought to make food

Question 7

Sound energy

Answer 7

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

Question 8

Electrical energy

Answer 8

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

Question 9

Chemical energy

Answer 9

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 10

Nuclear energy

Answer 10

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

Question 11

Law of conservation of energy

Answer 11

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

Question 12

Circuits

Answer 12

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

Question 13

Renewable energy

Answer 13

Energy sources that are constantly being replaced b nature

Question 14

Renewable energy sources

Answer 14

Solar energy
Hydro electric energy
Wind energy
Wave energy
Biomass energy (some plants produce oils others can produce fuels such as alcohol and methane gas .
Geothermal energy ( metal buried underground heats up

Question 15

Advantages of renewable energy

Answer 15

Renewable energy does not cause pollution

They will not run out

They are fairly safe to use

Question 16

Disadvantages of renewable energy

Answer 16

They are expensive to develop and set up

More research needs to be done into how to make them good sources of energy

Question 17

Non renewable energy

Answer 17

Non renewable energy sources cannot be replaced and will run out

Question 18

Non renewable energy sources

Answer 18

Fosiil fuels oil , coal and gas

Question 19

Fossil fuels

Answer 19

Oil , coal and natural gas are all examples of fossil fuels

Question 20

Disadvantage of fossil fuel

Answer 20

They cause pollution and damage to the atmosphere

Question 21

The sun as a source of all our energy

Answer 21

Heats the ocean and air creating wind, currents and allows plants to make føøð

Question 22

Nuclear energy

Answer 22

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

If this energy is uncontrolled dangerous explosions may happen

If the energy is controlled it can be used as a nuclear power station to make electricity

Question 23

Advantages of nuclear energy

Answer 23

In medicine nuclear radiation is used to kill cancer cells ,sterilise fooð, produce electricity , it will not run out like fossil fuels

Question 24

Disadvantages of nuclear energy

Answer 24

Waste products are harmful , they also last for a very one time , if the nuclear energy gets out of control huge explosions may håppëñ