Magnetic Forces

A student holds a magnet 1 m from a paper clip and sees no evidence of a force acting between the two. When the student brings the magnet 1 cm away from the paper clip, the paper clip begins to slide toward the magnet. Which statement best explains these results?

• The material in the paper clip wasn’t a magnetic material until the magnet was moved closer.

• The magnet did not have a magnetic field until it was close to the paper clip.

• The paper clip repelled the magnet at the farther distance.

• The magnetic field of the magnet was too weak to move the paper clip at a farther distance.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Because of the magnetic field, magnets do not have to touch to affect each other. _________

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If similar poles of two magnets  are brought near each other, the magnets _______

• align

• attract

• repel

• do not move

a place on a magnet where the force it applies is strongest.

• permanent magnet

• temporary magnet

• magnetic pole

• magnetic potential energy

A compass needle acts as a(n) _______.

• axis

• magnet

• domain

• system

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A compass needle’s magnetic north pole points toward which of the following?

• Earth's magnetic south pole

• Earth's magnetic north pole

• Earth's magnetic axis

• Earth's rotational axis

The location of the strongest magnetic field is the ____.

• A. center of the magnet

• magnetic domains

• magnetic fields 

• magnetic poles

The region around a magnet where the magnetic forces act is the _________.

• electromagnetic pole

• magnetic domain

• magnetic field

• magnetic pole

Tags

NGSS.MS-PS2-5

an object that attracts iron or other materials that have magnetic qualities similar to iron.

• ferromagnetic element

• magnet

• magnetic domain

• magnetic force

elements have an especially strong  attraction to magnets.

• Temporary magnet

• magnetic domain

• non magnetic materail

• feroomagnetic elemet

Tags

NGSS.MS-PS2-3