KMPP H6 Magnetism (Competition)

Magnetic field lines are closest together at the __________.

• poles

• lines

Earth's magnetic poles are in the same place as the geographic poles.

• True
• False

Magnetic field lines always cross.

• True
• False

A straight wire carrying a 9.0 A current is in a uniform magnetic field oriented at right angles to the wire. When 75 cm of wire is in the field, the force on the wire is 1.2 N. What is the strength of the magnetic field (B)?

• = 0.18 N

• = 0.18 T

• = 0.18 Cm

• = 0.18

Can you see magnetic fields?

• yes
• no

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

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

Tags

NGSS.MS-PS2-3

The SI unit of magnetic field is 

• weber
• guass
• tesla
• farad

Tags

NGSS.HS-PS2-5

The strongest part of a magnet is...

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

Tags

NGSS.MS-PS2-3

What kind of magnet can be turned on and off?

• refridgerator magnet
• electromagnet
• ferromagnet
• semimagnet

Tags

NGSS.HS-PS2-5

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.HS-PS2-5

NGSS.HS-PS3-5