POB2-Environmental considerations -sources of energy

Where does mains electricity come from?

• National Grid

• Solar power

• Wind turbines

• Hydroelectric power

What are fossil fuels?

• Renewable energy sources

• Naturally created in the ground

• Man-made energy sources

• Synthetic fuels

What is the main source of energy in thermal power stations?

• Hydroelectric power

• Wind energy

• Solar power

• Coal

Why are fossil fuels damaging to the natural world?

• They cause pollution

• They are abundant

• They are renewable

• They are clean energy sources

Why are alternative sources of renewable energy being used more?

• To support the National Grid

• To reduce pollution

• To reduce energy costs

• To increase the demand for fossil fuels

What is the primary disadvantage of using coal as an energy source?

• It is very expensive

• It is not abundant

• It causes air pollution

• It is a renewable resource

Why is wind energy considered a renewable resource?

• Because it is generated from fossil fuels

• Because wind is naturally replenished

• Because it can be stored for future use

• Because it is the cheapest form of energy

How does solar energy generate electricity?

• By burning solar cells

• By converting sunlight directly into electricity using photovoltaics

• By using sunlight to heat water and produce steam for turbines

• By reflecting sunlight onto a solar thermal plant

What is the main environmental benefit of using hydroelectric power?

• It produces large amounts of CO2

• It can only be used during the daytime

• It does not produce direct air pollution

• It requires large areas of land to be effective

Why is geothermal energy considered a renewable resource?

• Because it is derived from the Earth's internal heat, which is virtually limitless

• Because it is generated from fossil fuels

• Because it can be easily replenished by planting trees

• Because it relies on the sun, which is a renewable resource