4 Energy resources and energy transfers

Practice questions on Energy resources and energy transfers

• A remote mountain village currently uses a diesel generator to produce electricity. The vi… (4 marks, Describe)
• A country currently generates most of its electricity by burning fossil fuels. The governm… (4 marks, Describe)
• A firefighter climbs a vertical ladder to reach the top floor of a burning building. A sec… (4 marks, Explain)
• A factory worker pushes a heavy crate along a flat floor at a steady speed. She applies a … (4 marks, Explain)
• A solar-powered water pump is used to raise water from a well. The pump has a useful energ… (4 marks, Describe)
• A petrol-powered go-kart travels along a flat track at constant speed. Of the 50 000 J of … (4 marks, Describe)
• A wood-burning stove is used to heat a room. During this process, 18 000 J of chemical ene… (4 marks, Describe)
• A wind-up toy car is released and moves across a flat floor until it stops. Describe the e… (4 marks, Describe)
• A crane lifts a steel beam vertically upwards at a steady speed. The crane's motor transfe… (4 marks, Explain)
• A ski racer descends a snow-covered slope. As she moves down the slope, her gravitational … (4 marks, Explain)
• A building lift (elevator) carries passengers upwards at a steady speed. Explain why a lif… (4 marks, Explain)
• A coastal town is planning to install a tidal energy power station to generate electricity… (4 marks, Describe)
• A school is deciding whether to install solar panels or a small wind turbine to supply ele… (4 marks, State)
• A hydroelectric power (HEP) station is built in a mountainous region where a large reservo… (4 marks, Describe)
• A electric motor is used to lift a heavy crate. During this process, 2400 J of electrical … (4 marks, Explain)