BSE unit 5 lesson 7

What is one of the benefits of using renewable energy?

• It depletes local resources.

• It increases dependence on non-renewable energy.

• It contributes to air pollution.

• It helps to reduce the production of carbon dioxide and other greenhouse gases.

How do wind turbines generate electrical power?

• Through the process of nuclear fission.

• By converting sunlight into electricity.

• By using blades shaped like aircraft wings to harness wind's energy.

• By burning fossil fuels.

What is a disadvantage of wind turbines?

• They produce greenhouse gases once installed.

• They are not renewable.

• They can be noisy and cause vibration if pole mounted on a building.

• They require a constant supply of water.

What is required for the production of hydroelectric power?

• Strong sunlight.

• High wind speeds.

• Running water.

• Geothermal heat.

What is a disadvantage of ground source heat pumps (GSHPs)?

• They produce a lot of noise.

• They are expensive to install.

• They require sunlight to operate.

• They produce greenhouse gases.

What does nuclear energy production not produce?

• Electricity.

• Greenhouse gas emissions.

• Steam.

• Radioactive waste.

What is an advantage of solar PV systems?

• They require a small surface area for installation.

• The initial installation costs are low.

• They produce electricity even without sunlight.

• Solar energy is free, so this protects against rising energy costs.

What is a disadvantage of using fossil fuels?

• They are a renewable source of energy.

• They are safe to produce.

• They can be stored and transported easily.

• They contribute to global warming.

What is a potential application of hydrogen as a clean fuel?

• Exclusively for industrial processes.

• Only in cars.

• For transport and power generation.

• Only for portable power.

What is a downside of producing hydrogen through methane reforming?

• It does not require natural gas.

• Its by-products include CO2 and other greenhouse gases.

• It is a highly energy-efficient process.

• It produces only water as a by-product.