Renewable energy

Question 1

What are the six methods that are a renewable way to generate electricity?

Answer 1

1) Hydroelectric
2) Tidal
3) Waves
4) Geothermal
5) Solar cells
6) Wind turbines

Question 2

What is the hydroelectric power method?

Answer 2

It is where it usually requires the flooding of a valley by building a big dam and rainwater gets caught and allowed out through the turbines to the generator to create electricity

Question 3

What is an advantage of using hydroelectric power method? (3 things)

Answer 3

1) Provides an immediate response
2) It’s a reliable source
3) Very little pollution

Question 4

Name disadvantages of using hydroelectric power to generate electricity?

Answer 4

1) Big impact on the environment due to flooding of the valley
2) Loss of habitats for animals
3) Rotting vegetation causes methane and CO2 to be released

Question 5

What is the Tidal method?

Answer 5

It is where big dams are built across river estuaries with turbines in them and as the tide come in it fills up the estuary to a height of several metres- it drives the turbines to create electricity.

Question 6

Name 3 benefits for using the tidal method?

Answer 6

1) No polluting gases
2) Pretty reliable- happen twice a day
3) electricity is produced

Question 7

Name two disadvantages for using the tidal method for generating electricity?

Answer 7

Prevents free access by boats and spoils the view.

Question 8

What is the Wave power method?

Answer 8

Waves move up and down which drives air past the turbine to get them spinning and this produces electricity due to the up and down motion driving a generator

Question 9

What is an advantage for using the wave power method?

Answer 9

No polluting gases are produced

Question 10

What is a disadvantage for using Wave power method?

Answer 10

Not very reliable

Question 11

What is the Geothermal method to generate electricity?

Answer 11

Built near volcanic areas to pump cold water down a pipe where hot rocks are then it converts it into steam and that drives the turbines which create electricity.

Question 12

Name a disadvantage of using geothermal power method?

Answer 12

Aren’t very many suitable locations for power plants

Question 13

Name an advantage for using geothermal power method?

Answer 13

Brilliant free energy with no real environmental problems.

Question 14

What is the solar cells method?

Answer 14

Solar cells generate electric currents directly from sunlight

Question 15

Are solar cells the same as solar panels?

Answer 15

No solar panels use heat

Question 16

What is an advantage of using solar cells?

Answer 16

No polluting gases

Question 17

What is a disadvantage of using solar cells?

Answer 17

Not very reliable because you can only use them during the day time.

Question 18

What is the wind turbine method?

Answer 18

Use wind to generate electricity as the wind spines the turbines.

Question 19

Give 3 advantage of using wind turbines?

Answer 19

1) No polluting gases
2) Electricity is produced
3) No fuel costs

Question 20

Give a disadvantage for using wind turbines?

Answer 20

It is not always windy to turn the turbines