Unit Test — Unit test Answers

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Which statement best compares coal and ores?

Both are burned for energy.

Both take millions of years to form.

Both require oxygen to form.

Both are used to make coins.

Which is a possible negative result of using renewable resources?

rapid circulation of water cycle

increased wind turbine use

loss of animal species

decreased coal demand

Which shows the correct order of steps when using wind to generate electricity?

wind turbine blades turn generator → generator changes kinetic energy to electricity → kinetic energy from wind turns blades on wind turbine

kinetic energy from wind turns blades on wind turbine → wind turbine blades turn generator → generator changes kinetic energy to electricity

kinetic energy from wind turns blades on wind turbine → generator changes kinetic energy to electricity → wind turbine blades turn generator

wind turbine blades turn generator → kinetic energy from wind turns blades on wind turbine → generator changes kinetic energy to electricity

What is the purpose of the turbines in coal-fired power plants?

carrying electricity

burning coal

generating steam

converting energy

Recycling paper reduces water use.

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