Magnetic Field

Where is the magnetic field the strongest around a bar magnet?

• far away from the magnet

• at the side of the magnet

• at the poles

• above the magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnetic field lines are closet together at the __________.

• poles

• lines

Are the magnetic field lines in the picture correct?

• Yes, because they point from north to south.

• No, because they point from north to south (they're supposed to go the other way).

• Yes, because the North pole is on the left in all pictures.

• No, because the North pole is on the left in all pictures (it's supposed to be on the right).

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Looking at the field lines in this picture, these two magnets are ________

• Attracting

• Repelling

• Attracting and Repelling

• Doing nothing

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Iron filings can be used to show ​ (a)   which is where the magnetic force occurs,

• magnetic field

• poles

• temporary magnets

• force

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

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

• they repel

• they attract

• they cancel each other out

• the strength of the magnet is doubled

Tags

NGSS.MS-PS2-3

A north pole and a south pole will attract.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnets can interact without touching.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnetic field lines always cross.

• True

• False

The motion of liquid _______ in the Earth's core creates a magnetic field.

• Iron

• Magnesium