National and Global Energy Scource PMT Flashcards
(12 cards)
Give four examples of renewable energy source
- Wind energy
- Hydro electricity
- tidal energy
- solar energy
Give an example of a nonrenewable energy source
Fossil fuels (coal, oil, gas)
What are the advantages of generating power using gas rather than coal?
- Lower emissions of carbon dioxide
State two disadvantages of using renewable energy sources to generate power
- Output often determined by external factors ( e.g. wind ) so supply is uncertain
- Generating power through other means is often more efficient and economically beneficial
Explain the environmental impact of burning fossil fuels
- carbon dioxide contributed to the greenhouse effect
- Sulphur dioxide leads to acid rain
State three advantages of fossil fuels as an energy source
- reliable
- Can produce large amounts of energy for a given quantity
- Cell relevantly abundant so cost-effective
State three advantages of nuclear power
- Very large amounts of energy for relatively small quantities of fuel
- Doesn’t release greenhouse gases so it doesn’t contribute to climate change
- Low fuel costs
State three disadvantages of nuclear power
- produces nuclear waste
- Non-renewable energy source
- Risk of nuclear accidents
How does hydroelectric power produce energy?
1) Rainwater collects behind a dam
2) when this water is released it is used to turn a turbine
3) this turbine turns a generator which produces electricity
What are the advantages of tidal energy sources?
- They do not produce greenhouse gases
- They are quite reliable
- They are cheap to run
What are the disadvantages of hydroelectric power?
- The dam may cause flooding
- It can cost a lot to install the required infrastructure
What are some advantages of solar panels?
- they don’t cause harm to the environment
- They are renewable resource
- They can be used in remote areas where other types of energy are less accessible
