Magnets and Magnetism

Question 1

Mr. Garcia uses magnets to hold a poster on a steel filing cabinet because a main component of steel is

Revolt · Accepted Answer

iron.

Question 2

A bar magnet and a second object are hung from metal rods. The diagram below shows what happens when both objects are released.

Revolt · Accepted Answer

a bar magnet with its south pole on the left

Question 3

Which refers to the ends of a magnet where the forces are strongest?

Revolt · Accepted Answer

magnetic poles

Question 4

Which statement about Earth’s core helps explain Earth’s magnetic field?

Revolt · Accepted Answer

Earth’s core is composed of iron and nickel.

Question 5

Which element is magnetic?

Revolt · Accepted Answer

cobalt

Question 6

The diagram shows the field lines near the poles, X and Y, of two magnets.

Revolt · Accepted Answer

X: northY: north

Question 7

Two bar magnets are hung from metal rods and held in the position shown below. The magnets are released and swing freely. Which diagram best predicts their final position?

Revolt · Accepted Answer

A rectangular box with 2 black lines running down from it, each to a horizontal bar magnet labeled N to the left and S to the right. There is a gap between the magnets. The left magnet hangs to the right. The right magnet hangs to the left.

Question 8

Laticia draws the diagram below to show Earth’s magnetic field.

Revolt · Accepted Answer

The arrows to the right of Earth should point up.

Question 9

Jill uses a magnet to pick up a nail. Then, she touches the nail to a paper clip and picks up the paper clip. What will most likely happen when she pulls the magnet away from the nail?

Revolt · Accepted Answer

The paper clip will fall off of the nail because the nail was only a temporary magnet.

Question 10

Jolie builds a model of a maglev train. She uses disc magnets to levitate the train. A disc magnet has its north and south poles on its faces, as shown.

Revolt · Accepted Answer

flat, so that the north pole of the magnets on the train point up and the north poles of the magnets on the track point down

Magnets and Magnetism Answers

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