Energy Study Guide

What can change stored energy into electrical energy?

• Microwave oven

• Battery

• Treadmill

• Windmill

Evaluate the following statement: The use of renewable resources to generate electricity does not harm the environment.

• The statement is false because use of renewable resources can disrupt habitats.

• The statement is true because use of renewable resources will not deplete energy reserves.

• The statement is false because use of renewable resources causes air pollution.

• The statement is true because renewable resources are cleaner than fossil fuels.

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Which factor would determine if hydroelectric energy was a good source of electricity for your town?

• presence of a uranium mine

• plenty of days of sunlight

• presence of a flowing river

• presence of strong winds

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How is electricity produced in a nuclear power plant?

• Reactions in uranium are used to produce electricity.

• Natural gas turns turbines to produce electricity.

• Coal is burned to produce electricity.

• Dams are built to produce electricity.

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Tyler packed a flashlight to use on her camping trip. In terms of energy, what will the flashlight help her do?

• It will change electrical energy to sound.

• It will change chemical energy to the energy of motion.

• It will change energy of motion to heat.

• It will change stored energy to light.

Two moving objects of different sizes collide. What happens to the energy of the objects?

• Both objects lose all of their energy.

• Both objects lose some of their energy.

• The larger object loses all of its energy.

• The smaller object loses all of its energy.

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A student set up two ramps, as shown in the diagram below. She released a marble at the top of Ramp 1.

What will happen when the marble reaches Ramp 2?

• It will stop.

• It will slow down.

• It will move faster.

• It will gain energy.

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How does energy change when a player kicks a soccer ball to score a goal?

• The ball loses energy.

• Neither the ball nor the player's foot gains energy.

• The ball gains most of the energy of motion.

• The player's foot gains most of the energy of motion.

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Four runners are in a race. What can you infer about the runner who crosses the finish line first?

• The runner had the most energy.

• The runner had the slowest speed.

• The runner had the longest stride.

• The runner had the shortest distance to run.

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What happens when a tennis player hits the ball over the net with her racquet?

• The ball's energy and motion change.

• The net gains some of the ball's energy.

• All of the ball's energy is changed to sound.

• All of the racquet's energy is changed to sound.

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