Magnetic Force and Fields

Magnetic poles that are unlike ________and magnetic poles that are alike ___________.

• run; stay
• attract; repel
• stay; repel
• repel; attract

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

What is the symbol for magnetic field?

• I

• B

• M

• F

Tags

NGSS.HS-PS2-5

What is the UNIT for magnetic field?

• T

• A

• B

• unitless

Tags

NGSS.HS-PS3-5

A north pole and a south pole will attract.

• True
• False

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

NGSS.MS-PS2-5

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

NGSS.MS-PS2-5

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

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Magnetic field lines always cross.

• True
• False