Amplify Magnetic Fields Ch. 1 Quiz

Magnets can interact without touching.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What happens when two north poles of a magnet are placed together?

• they attract

• they repel

• they cancel each other out

Tags

NGSS.MS-PS2-3

A north pole and a south pole will attract.

• True

• False

Tags

NGSS.MS-PS2-3

The area of magnetic force around a magnet is known as its _____________.

• magnetic field

• magnetic fan

• magnetic force

Tags

NGSS.MS-PS2-3

A magnet must always have two poles, even if cut in half, because ________________.

• A magnet is made up of tiny magnetic domains that are aligned.

• Magnetic domains are out of alignment.

• Each pole divides in half and the magnetic field becomes weaker.

What causes the magnetic field to form in an electromagnet?

• The magnetic field is absorbed from another magnet

• Electromagnets are only called magnets because electricity is involved.

• The domains of the magnet become aligned

• Electric current flowing in a wire

Tags

NGSS.MS-PS2-3

Permanent magnets are made out of the following materials:

• Nickel, Cobalt, and Iron

• Iron, Cobalt, and Silver

• Copper, Nickel, and Iron

• Copper, Chromium, and Cobalt

Tags

NGSS.MS-PS1-1

You can cause a permanent magnet to lose its magnetic field if _____________.

• You rub an iron object with a permanent magnet in the same direction repeatedly.

• You connect the north and south poles of two magnets.

• You forcefully vibrate the object, causing its domains to fall out of alignment.

• You freeze the object.

Magnetic fields are strongest _______________.

• at the north pole

• at both poles

• at the south pole

An electromagnet can be strengthened if _______________.

• a nickel or cobalt iron core is used.

• less coils are added to the iron core

• the iron core is removed

• more current runs through the wire