Energy

Question 1

Front: What are the uses of solar energy?

Answer 1

Back:
- Heating food
- Photosynthesis
- Powering photovoltaic cells
- Generating electricity

Question 2

Front: How does wind energy work?

Answer 2

Back:
1. Large turbines are built in areas with strong, consistent winds.
2. Wind turns the turbines, which powers generators.
3. The generators convert kinetic energy into electrical energy.

Question 3

Front: Compare advantages and disadvantages of chemical/fuel energy.

Answer 3

Back:
- Advantages:
- Relatively cheap
- Easy to use
- Disadvantages:
- Produces greenhouse gases
- Sulfur emissions lead to acid rain
- Non-renewable source

Question 4

Front: Compare advantages and disadvantages of potential energy from water.

Answer 4

Back:
- Advantages:
- No pollutants
- Renewable source
- Disadvantages:
- Disrupts surrounding ecosystems
- Ineffective during droughts

Question 5

Front: Compare advantages and disadvantages of geothermal energy.

Answer 5

Back:
- Advantages:
- Little environmental impact
- Self-replenishing
- Renewable source
- Disadvantages:
- Very expensive
- Limited number of suitable sites

Question 6

Front: Compare advantages and disadvantages of nuclear energy.

Answer 6

Back:
- Advantages:
- No pollutants
- Small amount of fuel produces large amounts of energy
- Disadvantages:
- Expensive to start up
- Risk of nuclear contamination
- Non-renewable source

Question 7

Front: Compare advantages and disadvantages of solar energy.

Answer 7

Back:
- Advantages:
- No pollutants
- Renewable source
- Disadvantages:
- Expensive (solar panels)
- Relies on climate which is unpredictable

Question 8

Front: Compare advantages and disadvantages of wind energy.

Answer 8

Back:
- Advantages:
- Produces relatively large amounts of energy
- Renewable source
- Disadvantages:
- Requires large areas for turbines

Question 9

Front: What is the distinction between finite (non-renewable) and renewable sources of energy?

Answer 9

Back:
- Finite/Non-renewable sources: Cannot be replaced once used up (e.g., coal, petrol, oil, nuclear).
- Renewable sources: Can be replaced once used up (e.g., solar, hydroelectricity, geothermal, wind).