Generating Electricty

Question 1

3 disadvantages of fossil fuels

Answer 1

Produces carbon dioxide
Non renewable
Produced sulphur dioxide- acid rain

Question 2

3 advantage of nuclear power

Answer 2

Reliable
Don’t produce carbon dioxide
Good for a steady supply

Question 3

3 disadvantages of nuclear power

Answer 3

Non renewable
Nuclear waste is highly radioactive
Has to be stored away for thousands of years

Question 4

3 advantages of geothermal energy

Answer 4

Renewable
No carbon dioxide produced
No fuel cost

Question 5

3 disadvantages of geothermal energy

Answer 5

Not many suitable places

By drilling you release many hazardous gases

Question 6

3 advantages of hydro electric power

Answer 6

Very reliable
Provide instant electricity at times of high demand
Doesn’t contribute to global warming

Question 7

3 disadvantages of hydroelectric power

Answer 7

Costs a lot of money
Takes a long time to build
They flood large areas behind them affects people and wildlife

Question 8

3 advantages of tidal power

Answer 8

Renewable
Predictable
High power output

Question 9

3 disadvantages of tidal power

Answer 9

Unreliable - can’t control the tide
Tidal barrages only work when there is a movement of water
Few suitable locations

Question 10

3 advantages of wave power

Answer 10

Energy is free
Renewable
No global warming

Question 11

3 disadvantages of wave power

Answer 11

Can’t control the waves
Unreliable
Spoil coastal waves

Question 12

3 advantages of wind power

Answer 12

Renewable
No global warming
Wind is free energy

Question 13

3 disadvantages of wave power

Answer 13

Unreliable
Can be noisy
Spoil the view

Question 14

3 advantages of solar energy

Answer 14

Renewable
No global warming
Free energy

Question 15

3 disadvantages of solar energy

Answer 15

Unreliable
Can’t use at night
Expensive to make and buy

Question 16

3 advantages of biomass energy

Answer 16

Renewable
Carbon neutral
Recycling waste

Question 17

3 disadvantages of biomass energy

Answer 17

Deforestation
Hard to get enough biomass to produce energy
Ethical issue-food for energy not starving people

Question 18

Quickest start up time

Answer 18

Gas and hydroelectric

Question 19

Reliable

Answer 19

Fossil
Nuclear
Geothermal
Hydroelectric

Question 20

Carbon neutral

Answer 20

Biomass

Question 21

Bad effect in environment

Answer 21

Fossil
Nuclear 
Hydroelectric 
Solar cells 
Wind 
Geothermal

Question 22

How hydroelectric power is produced

Answer 22

Build a dam across a river 
The water flows through the dam 
The water turns turbines 
Turbines turn generators 
Electrical power generated

Question 23

How tidal power is produced

Answer 23

Build a tidal barrage across the mouth of the river 
Traps water 
Tide comes in 
Turns turbines 
Turbines turn generators 
Electrical power reduced

Question 24

How wave power is produced

Answer 24

Incoming waves force air out of the chamber
Waves make water rise and fall in chamber
Water turns turbines
Turbines turn generators
Electric power produced

Question 25

How geothermal energy is produced

Answer 25

``` Drill holes into the hot region Send down cold water Steam and hit air rises Steam turns turbines Turbines turn generators Generators make electrical energy ```

Question 26

Voltage goes in at | Voltage comes out at

Answer 26

2000v | 240v

Question 27

3 advantages of fossil fuels

Answer 27

A large power output Power station can be built anywhere Reliable