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3 cards from this section. Quick, good the night before a test.
What is kinetic energy?
Think about moving objects.
What type of energy do electric vehicles use?
Consider what powers the car.
What type of energy do vehicles primarily convert to kinetic energy?
Think about what fuels cars run on.
True or False: Solar panels can only be used on Earth.
Consider where sunlight reaches.
A power plant uses coal to generate electricity. If it burns 1000 kg of coal, which produces 3,000 kWh of electrical energy, what is the efficiency of this plant if we assume it started with 3800 kWh of thermal energy from the coal?
Break the problem down to find useful energy and total energy.
If an electric vehicle consumes 20 kWh to travel 100 km, what would be the energy consumption for a trip of 250 km? What can you infer about the efficiency of this vehicle relative to gas vehicles?
First, figure out the energy needed for each distance.
4 more questions in this section. Enroll free to practise them all.
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