Magnetic Fields

The SI unit of magnetic field is 

• weber
• guass
• tesla
• farad

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

The strongest part of a magnet is...

• the bars.
• the force field.
• the poles. 
• the middle.

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NGSS.MS-PS2-3

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• ferromagnet
• semimagnet

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NGSS.MS-PS2-3

There are several modern uses of magnets.  Magnets allow high speed trains to ______________________ above the track.  They go faster because without touching the tracks there is no friction to slow them down.

• collide
• levitate
• attract
• repair

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).

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Why does each electron in an atom behave like a tiny magnet?

• The spinning of an electron produces a magnetic field.
• The spinning of an proton produces a magnetic field.

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

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

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

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

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

Tags

NGSS.MS-PS2-3

A compass behaves as it does because each needle acts as a(n) ___________.

• Magnet
• Guide

Tags

NGSS.MS-PS2-3