EMF - Invest. 3 - Electromagnets

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

• refrigerator magnet
• electromagnet
• magnetite
• iron

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.

What is an electromagnet?

• a magnet that creates an electric current
• a device that created electricity 
• a magnet that creates kinetic energy
• a device that creates a magnet

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What is the flow of electricity?

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

What is the PATH for electricity called?

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

A material in which electrons are not able to move easily 

• Circuit 
• Insulator 
• Resistance 
• Conductor

An example of an insulator is:

• iron
• silver
• copper wire
• rubber

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How do you make an electromagnet?

• wrap a battery in wire and connect it to an iron nail.
• wrap a wire with another wire and connect it to an iron nail.
• wrap an iron nail in wire and connect it to a power source.
• wrap an iron nail in wire and connect it to another iron nail.

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While electric current is flowing through a wire, what surrounds the wire?

• a magnetic field
• a glowing light
• neutrons
• protons

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How were we able to turn the electromagnet off?

• Hooking the wire up to the battery/

• Moving the battery further away from metal objects

• Disconnecting the circuit to stop current flow

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