Magnets and Magnetism

Question 1

Which actions most likely cause the domains in a ferromagnetic material to align? Check all that apply.heating the materialrubbing the material against a magnetpassing electricity around the materialplacing the material in a magnetic field of opposite polarityplacing the material near a strong magnethitting the material

Revolt · Accepted Answer

rubbing the material against a magnet; passing electricity around the material; placing the material near a strong magnet

Question 2

Before beginning an experiment, Mrs. Wilson warns her science class not to drop the bar magnets on the floor.

Revolt · Accepted Answer

The magnet might lose its magnetism.

Question 3

Which statement describes the magnetic field inside a bar magnet?

Revolt · Accepted Answer

It points from south to north.

Question 4

This diagram shows the magnetic field lines near the ends of two magnets. There is an error in the diagram.

Revolt · Accepted Answer

changing the S to N

Question 5

A magnetically soft material is placed in a strong magnetic field.

Revolt · Accepted Answer

It will become a temporary magnet because the domains will easily realign.

Question 6

Which actions most likely cause the domains within a material to lose their alignment and become more randomized? Check all that apply.heating the materialrubbing the material against a magnetpassing electricity around the materialplacing the material in a magnetic field of opposite polarityplacing the material near a strong magnethitting the material

Revolt · Accepted Answer

heating the material; placing the material in a magnetic field of opposite polarity; hitting the material

Question 7

The diagram shows two bar magnets. They are cut along the dashed line, and then the two marked ends are placed near each other.

Revolt · Accepted Answer

The pieces will repel because the cut end of the top magnet is a south pole.

Question 8

How does the north pole of a magnet respond to the poles of other magnets?

Revolt · Accepted Answer

It attracts the south pole and repels the north pole.

Question 9

Barton conducts an experiment using three metallic bars that might be magnets. The bars are labeled A, B, and C. The ends of each bar are numbered 1 or 2.He places the end of one bar close to an end of a second bar and records his results in the table shown.Based on the data, which prediction should he expect to occur?

Revolt · Accepted Answer

C2 attracts B2.

Question 10

The north pole of a strong magnet is dragged down an iron nail from the top to the point 50 times.

Revolt · Accepted Answer

The nail will pick up some paper clips because its domains have been aligned.

Magnets and Magnetism Answers

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