AS Environment Unit 5 Practice Exam

Front

Why are alternative fuels to coal needed for electricity generation?

Back

Coal is finite.

Front

What is a disadvantage of using imported sources of energy for electricity generation?

Back

Imported energy sources can lead to energy security issues and price volatility.

Front

What was the significance of the UK generating electricity for 24 hours without using coal in 2017?

Back

It demonstrated the potential for renewable and alternative energy sources in electricity generation.

Front

What are some reasons why the electricity generated from wind power might be less than a quarter of the total?

Back

Not enough wind turbines and variability in wind conditions.

Front

Which fuel source has decreased its contribution to total electricity production by the greatest percentage since 1985?

Back

Oil.

Front

Why can burning biomass, such as wood pellets, be described as carbon neutral?

Back

Biofuels absorb CO2 as they grow, offsetting emissions when burned.

Front

What are some examples of alternative fuels to coal?

Back

Natural gas, nuclear power, wind, solar, and biomass.

Front

What role does natural gas play in electricity generation compared to coal?

Back

Natural gas is often seen as a cleaner alternative to coal, producing less CO2 when burned.

Front

How does nuclear power contribute to electricity generation?

Back

Nuclear power generates electricity through nuclear fission, producing minimal greenhouse gas emissions.

Front

What are the environmental impacts of using coal for electricity generation?

Back

Coal mining and burning contribute to air pollution, greenhouse gas emissions, and habitat destruction.