C - Methods We Use To Generate Electricity

Question 1

Renewable energy resources are…

Answer 1

Resources that will never run out

Question 2

Non-renewable resources are…

Answer 2

Resources that will run out one day

Question 3

Describe the process of how to generate electricity in big power stations:

Answer 3

coal,oil or gas (fuel) - chemical energy - is burned in a furnace - heat energy - to produce steam which turns the turbine - kinetic energy - and then this energy is generated into electrical energy

Question 4

What are 3 renewable energy sources:

Answer 4

• Solar panels
• Wind turbines
• Hydroelectric
• Bio-fuel
• Wave power
• Geothermal Energy

Question 5

What are the 3 renewable energy resources that are non-renewable:

Answer 5

• Coal
• Gas
• Oil

Question 6

They step-up transformers for electricity lines so that…

Answer 6

Less energy is loss when passing through the miles of electricity miles. More efficient.

Question 7

They step-down transformers for houses so that…

Answer 7

It is down to safe, usable levels at the other end

Question 8

What issues do non-renewables cause? (Name at least 2)

Answer 8

• Releases co2 -greenhouse effect, global warming
• Releases sulfur dioxide, which causes acid rain
• Oil spillage

Question 9

What are 2 disadvantages of biofuels?

Answer 9

• Burning them re-releases the co2 aborted by the plants

* Large amounts of forest has to be cleared to grow biofuels

Question 10

What is the national grid?

Answer 10

It takes electrical energy from power stations to where it’s needed in homes.