Magnetic Fields

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

The strongest part of a magnet is...

• the bars .

• the force field.

• the poles.

• the middle.

Tags

NGSS.MS-PS2-3

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

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

• magnetic field

• magnetic declination

• magnetic fan lines

• magnetic tan lines

Tags

NGSS.MS-PS2-3

A ________ is a device that has a magnet on a needle that spins freely. It is used for navigation because its needle usually points north.

• calculator

• ruler

• compass

• map

what is the earths magnetic field useful for 

• deflecting the solar wind, charged particles that come from the Sun.
• wind
• sun
• light

Why does a compass needle point north?

• The compass is a bar magnet
• Because north is up
• Because it's magic
• It lines up with the Earth's magnetic field

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

Why are paper clips attracted to magnets?

• They contain silver.
• They contain aluminum
• They contain tin.
• They contain iron. 

Tags

NGSS.3-PS2-3

In what direction does a magnetic field move?

• North to South

• South to North

• Left to right

• Positive to negative