Electromagnetism 1

The frequency of a wave is the rate of how many waves per ___________.

• Hertz
• Second
• Hour
• None of the answers are correct.

What does the magnetic field look like on a straight wire?

• 
• 
• 
• 

What does a magnetic field look like around a bar magnet?

• 
• 
• 
• 

What does the magnetic field look like around a solenoid?

• 
• 
• 
• 

What kind of magnet can be turned on and off? (Man-made magnet)

• refrigerator magnet
• electromagnet
• magnetite
• iron

If you wrap more coils around an electromagnet, it will become...(think about the Webquest.)

• brighter
• stronger
• weaker
• invisible

How do like poles interact with each other? (north to north)

• They repel each other.
• They attract each other.
• Throw a toaster into a bathtub.
• No relationship.

Opposite poles _____ .

• attract
• push away
• are balanced
• transfer electrons

A turbine is used to ________ the magnet in a generator.

• rotate
• electrify
• attract
• repel

What is the flow of electricity?

• electric motor
• Electric current
• Electric eel
• electric circuit