Magnets and Magnetism

Question 1

Which element is magnetic?

Revolt · Accepted Answer

cobalt

Question 2

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 3

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 4

In an illustration, lines of force are drawn around a magnet to illustrate the magnetic

Revolt · Accepted Answer

field.

Question 5

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 6

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 7

Which best describes Earth’s magnetic field lines?

Revolt · Accepted Answer

The field lines go out of Earth near the geographic South Pole and enter Earth near the geographic North Pole in an area where the magnetic pole does not align with the geographic pole.

Question 8

Mateo drew the field lines around the ends of two bar magnets but forgot to label the direction of the lines with arrows.

Revolt · Accepted Answer

left

Question 9

Joe follows the procedure below to make a compass.1. Move a magnet from the top of a needle to its point fifty times.2. Lay the needle on a cork that is floating in a bowl of water.3. Observe the direction that the needle points.

Revolt · Accepted Answer

to magnetize the needle

Question 10

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

Revolt · Accepted Answer

X: northY: north

Magnets and Magnetism Answers

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