Magnetic Fields

What does the following represent?

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗⊗

• Multiplied by a billion

• A piece of modern art

• Uniform magnetic field directed into the screen away from you

• Uniform magnetic field directed out of your screen at you

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

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 does the following represent?
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙
⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙⊙

• A crowd with binoculars
• A bunch of coaxial cables 
• Uniform magnetic field directed into the screen away from you
• Uniform magnetic field directed out of your screen at you

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

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