Energy and Motion Study Guide

Anya wants to build an electric circuit. She has used a wire to connect one side of a battery to a light bulb. What does she need to do next to make her circuit complete?

• Anya needs to use a second wire to connect the other side of the battery to the light bulb.

• Anya needs to use another source of energy to connect the battery to a switch.

• Anya needs to use a second wire that connects the light bulb to a switch.

• Anya needs to use another source of energy to connect the light bulb to the battery.

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The picture shows two bumper boats powered by electric motors. The boats are about to collide. Which sentence is the best prediction for what will happen when the two motorized bumper boats collide?

• The speed of both boats will remain the same.

• The speed of both boats will change.

• Both boats will continue to move in the same direction.

• Both boats will stop moving.

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In which action does a golf club transfer the most energy?

• A golf club is carried by a golfer.

• A golf club is removed from a golf bag.

• A golf club rests on a golf course.

• A golf club strikes a golf ball.

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Many people use electric stoves to cook food. The pictures show burners on an electric stove. One burner is on. The other burner is off. Which statement about the burner is likely true?

• The burner is made of a material that is a resistor. It changes electric energy into light and heat.

• The burner is made of a material that is an insulator. It stops energy from flowing out of the burner.

• The burner is made of a material that is a conductor. It allows heat energy to flow through a circuit.

• The burner is made of a material that is an energy source. It controls the amount of heat produced by the light.

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Which statement about energy is true?

• Energy is a wave.

• Energy cannot travel through a vacuum.

• Energy has the ability to cause motion.

• Energy cannot change form.

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The stove burner heats up the metal pot. This is because of

• solar energy.

• convection.

• insulation.

• conduction.

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When you drop a rubber ball, gravity pulls the ball to the floor. When the ball hits the floor, it becomes deformed and stores some of the energy it had. This energy helps the ball bounce back. What sequence describes these energy changes?

• kinetic potential → kinetic → potential

• potential → kinetic → potential → kinetic

• potential → kinetic → thermal → potential

• thermal → kinetic → potential → kinetic

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What kind of energy conversion takes place as a roller coaster car climbs to the top of the first hill?

• elastic energy → chemical energy

• kinetic energy → chemical energy

• potential energy → kinetic energy

• kinetic energy → potential energy

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Why is plastic a good choice for covering electrical wires?

• It allows electricity in one wire to come in contact with other wires more easily.

• It speeds up the flow of electricity through the wires.

• It only allows electricity to flow through the wires.

• It is a good conductor of electricity, so it increases the flow of energy.

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An automobile moves down a straight road at a constant speed. What about the car is changing?

• its direction

• its velocity

• its acceleration

• its position