Renewable Energy

Question 1

What are the 3 sources of fossil fuels?

Answer 1

Coal, natural oil and gas

Question 2

What are the key steps of the national grid?

Answer 2

1. The strore of chemical energy is transfered as heat.
2. It is then transfered to a step-up transformer (depending of the number of coils)
3. It is then sent through the high voltage transmission lines.
4. Then it is sent to a step-down transformer.

Question 3

Advantages of coal

Answer 3

Enough coal on Earth to last hundreds of years.

Produces high amounts of energy.

Question 4

Disadvantages of coal

Answer 4

Produces carbon dioxide when burned, contributing to global warming.
Damage is caused to natural land when mining takes place.

Question 5

Natural gas adavantages

Answer 5

It emits less carbon dioxide than coal or oil.

The UK has shale deposits (this is done by fracking)

Question 6

Natural Oil disadvantages

Answer 6

Gas is highly flammable - if there is a gas leak, explosion can happen.
Extracting gas might cause the pollution of water.

Question 7

Oil source advantages

Answer 7

A small amount of oil can produce a lot of energy.

It is relatively easy to store and transport.

Question 8

Oil source disadvantages

Answer 8

Creates significant air pollution when burned.

Considerable impact on water, land use and disposal.

Question 9

Nuclear power process

Answer 9

Atoms are split, and this energy is used to convert water into super-heated steam. This spins turbines connected to electrical generators to produce electricity.

Question 10

Nuclear power advantages

Answer 10

No harmful gases are released in the process.

More efficient than fossil fuels

Question 11

Nuclear power disadvantages

Answer 11

They have closed for 40 years because the uranium becomes less efficient at heating the water.
Disposal o uranium is difficult and costly.
Cost of nuclear power stations is very large.

Question 12

What are the 5 types of renewable energy

Answer 12

Wind, Solar, Tidal, Hydroelectric and Biomass

Question 13

Wind energy definition

Answer 13

Uses wind turbines to harness the wind

Question 14

Advantages of wind energy

Answer 14

Constantly available and sustainable.

No cost for wind and the running cost is relatively low to others.

Question 15

Disadvantages of wind energy

Answer 15

Low periods of wind mean little energy produced.
Cost a lot to build.
Spoil the natural landscape.

Question 16

Solar energy

Answer 16

It is made from photovoltaic cells which harness the Sun’s light energy and convert it into electricity.

Question 17

Advantages of solar energy

Answer 17

Renewable source.
It is everlasting.
Reduces household energy bills.

Question 18

Disadvantages of solar energy

Answer 18

Spoil the appearance of a building.
Cost bare bruv.
Doesn’t produce a lot of energy is there are bare clouds innit

Question 19

Tidal energy

Answer 19

Water pushes turns the turbines which generate electricity.

Question 20

Advantages of tidal energy

Answer 20

Clean, renewable.
Tidal power plants last long.
UK is surrounded by sea so it needs an island surrounded by the sea.

Question 21

Disadvanatages of tidal energy

Answer 21

Construction of tidal barrages is expensive.

Environmental impact is unknown.

Question 22

Hydroelectricity

Answer 22

Uses a dam to block a valley. Once water has built up the dam, the turbines turn generators to produce electricity.

Question 23

Advantages of hydroelecticity

Answer 23

Clean, renewable energy.
Valves can be opened very quickly to produce energy at peak times.
No pollution

Question 24

Disadvantages of hydroelectricity

Answer 24

Dams cost bare bruv
Environmentalists get vexed i ain’t gon cap
Afftect the mandem from wildlife

Question 25

Biomass

Answer 25

Growing plants or using animal materials which are burnt which produces heat.

Question 26

Advantages of biomass

Answer 26

Carbon dioxide is released by plants and can be reused.

Replacement plants can be grown very quickly to ensure a good supply.

Question 27

Disadvantages of biomass

Answer 27

Cretaes atmospheric pollution.

Land used for crops can be used for other purposes such as agriculture.