Spiral Review Electricity

During a science class, Liam was asked to identify which of the following materials has magnetic properties. Can you help him?

• Plastic

• Wood

• Cobalt

• Clothes

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Charlotte is working on a science project where she needs to understand the type of energy involved when electrons move through a circuit. What type of energy is associated with the movement of electrons?

• Nuclear Energy

• Radiant Energy

• Mechanical Energy

• Electrical Energy

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Emma and Daniel are playing with magnets. They notice that the force of magnetism is stronger when the magnets are ________________.

• cold

• round

• closer together

• farther apart

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Isla is building an electromagnet for her science project. Which material could she use for the core of the electromagnet?

• a wooden rod

• a vial of water

• a plastic rod

• a nickel rod

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William and Henry are playing with magnets. If they bring two north poles together, or two south poles together, will the magnets attract and stick together?

• True

• False

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While working on a science project, Harper noticed that electric fields are often associated with what other kind of field?

• Magnetic Fields

• Nuclear Fields

• Particle Fields

• Corn Fields

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Michael rubbed a balloon on his hair and noticed that his hair stood up and was attracted to the balloon. Choose the correct reason why this happened.

• Both balloon and hair are neutral

• Both balloon and hair are same charged

• The balloon is negatively charged and hair is neutral

• The balloon and hair are differently charged

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Elijah is working on a science project to create a strong electromagnet. What are two ways he can make the electromagnet stronger?

• 1. add more coils of wire around the iron core 2. wrap a thinner wire around the core

• 1. add less coils of wire around the iron core 2. add more electricity flowing through a wire

• 1. add more coils of wire around the iron core 2. add less electricity flowing through the wire

• 1. add more coils of wire around the iron core 2. add more electricity flowing through the wire

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The girl's hair and the comb are attracting one another. The hair and the comb have

• opposite charges

• like charges

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Which statement best describes the electric fields in the image?

• The charges are neutral.

• Both charges are negative, so the field lines are alike.

• The field lines move toward a positive charge and away from a negative charge.

• The field lines move away from a positive charge and toward a negative charge.

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