Renewable energy.

Question 1

What are renewable resources?

Answer 1

• Renewable resources are ones that are being (or can be) replenished as it is used.

Question 2

What is wind energy?

Answer 2

• Wind energy is when the kinetic energy of the wind moves a blade (attached to a turbine) and is converted into electrical energy.

Question 3

What is a turbine?

Answer 3

• A turbine is a revolving machine that is turned by water, steam or wind. In power stations, turbines turn a generator.

Question 4

What is a generator?

Answer 4

• A generator is a device that converts kinetic energy to electrical energy.

Question 5

What happens if there is too much/ little wind?

Answer 5

• Too much wind: blade will not work. No electicity.
• Too little wind: No electricity will be generated.

Question 6

What are the advantages of wind power?

Answer 6

Wind power:
- Renewable
- 0 emissions
- No fuel costs

Question 7

What are the disadvantages of wind power?

Answer 7

• Noise/ sight pollution.
• Unreliable (amount of electricity depends on wind)

Question 8

What is tidal energy?

Answer 8

• Tidal energy is a renewable source powered by the movement of the sea as it rises/ falls with tides.

Question 9

What is wave energy?

Answer 9

• Wave energy is a renewable source that uses the movement of the waves to drive a turbine.

Question 10

What is hydroelectricity?

Answer 10

• Hydroelectricity is a renewable source generated by the gravitational potential energy and kinetic energy of water in a reservoir and falling down into water flow.

Question 11

What are the advantages of wave/ tidal power?

Answer 11

• 0 emissions
• No fuel cost
• Renewable

Question 12

What are the disadvantages of wave/ tidal power?

Answer 12

• Location specific.
• Unreliable.
• Inefficient.

Question 13

What are the advantages of hydroelectricity?

Answer 13

• Reliable
• 0 emissions
• Controllable for demand
• Renewable

Question 14

What are the disadvantages of hydroelectricity?

Answer 14

• Harmful to habitats/ homes
• Location specific

Question 15

What is geothermal energy?

Answer 15

• Geothermal energy is a renewable source that uses the earth’s heat to generate electricity.

Question 16

What are the advantages of geothermal energy?

Answer 16

• Renewable
• 0 emissions
• Reliable

Question 17

What are the disadvantages of geothermal energy?

Answer 17

• Location specific
• Can trigger earthquakes during building them
• Can release greenhouse gases during drilling into the ground to build geothermal power plants.
• Expensive

Question 18

What is solar energy?

Answer 18

• Solar energy is a renewable source powered by nuclear fusion in the sun - emitt radiation to generate heat or electricity.

Question 19

What is a solar cell?

Answer 19

• A solar cell is a device that transfers light energy into electrical energy via the radiation pathway.

Question 20

What is a solar panel?

Answer 20

• A solar panel gets heat energy from the sun to heat up cold water in a boiler.

Question 21

What are the advantages of solar energy?

Answer 21

• Renewable
• 0 emissions
• No fuel costs

Question 22

What are the disadvantages of solar energy?

Answer 22

• Inefficient (no where to store large amounts of electricity/ heat generated.)
• Expensive to fit.
• Unreliable (electricity generated depends on weather conditions.)

Question 23

What is biomass energy?

Answer 23

• Biomass energy is a renewable source powered by plant and animal material.

Question 24

How can biomass be used?

Answer 24

• Liquid fuel for vehicles
• Electricity for homes and buildings
• Heat water

Question 25

What is meant by carbon neutral?

Answer 25

• Carbon neutral is when you balance out the carbon released to the carbon absorbed.

Question 26

What are the advantages of biomass energy?

Answer 26

• Renewable
• Reliable
• Release less carbon dioxide

Question 27

What are the disadvantages of biomass energy?

Answer 27

• Reduced space for crops.
• Still releases carbon dioxide (contributing to global warming.)