T3L2 Quiz

What types of material attract a magnet?

• Materials containing any type of metal

• Materials that are shiny

• Materials that contain iron

• Materials that contain another magnet

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Which of the following tests could Suki perform to determine which magnet has a stronger magnetic force?

• Test which magnet is heavier.

• Test which magnet can hold more paperclips.

• Test which magnet glows brighter in the dark.

• Test which magnet bends more when dropped.

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Where are the strongest and weakest parts of the magnetic field of a bar magnet?

• Strongest: At the poles; Weakest: In the center

• Strongest: In the center; Weakest: At the poles

• Strongest: In the middle; Weakest: At the ends

• Magnetic fields are equally strong throughout the magnet.

Justin was comparing the potential energy of like poles and like charges. Which is true?

• The potential energy increases as like poles and like charges move closer together.

• The potential energy decreases as like poles and like charges move closer together.

• The potential energy stays the same regardless of the distance.

• The potential energy flips from positive to negative when they touch.

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How does Earth's magnetic field protect life on Earth?

• It blocks harmful ultraviolet light from the Sun.

• It deflects solar wind and charged particles from the Sun.

• It prevents earthquakes from occurring.

• It helps Earth keep a perfect orbit around the Sun.

What happens when opposite poles of two magnets are brought close to each other?

• They repel each other.

• They attract each other.

• They lose their magnetic force.

• They produce static electricity.

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What would happen if you cut a bar magnet in half?

• Each piece would have its own north and south poles.

• Each piece would lose its magnetic force.

• Only the larger piece would remain magnetic.

• The two pieces would combine into a single magnetic pole.

Which of the following best describes the purpose of magnetic field lines in a diagram?

• They show the size of the magnet.

• They represent the direction and strength of the magnetic field.

• They indicate how fast the magnet moves.

• They measure the temperature of the magnetic poles.

What material would block or weaken a magnetic field?

• A piece of wood

• A thick block of iron

• A sheet of aluminum

• A thin sheet of plastic

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Which of these can increase the strength of an electromagnet?

• Increasing the current flowing through the wire

• Reducing the number of wire coils

• Using a plastic core

• Decreasing the battery voltage