Electromagnets, Generators and Motors

Which device uses mechanical energy to produce electrical energy?

• Electric Motor
• Magnet
• Generator
• Solar Cell

Electricity is the flow of _________.

• Protons
• Neutrons
• Electrons

What force does a magnetic field apply without actually touching the object? 

• a push or pull
• gravity 
• friction 
• pressure 

Surrounding every magnet is a __________  __________.

• magnetic field
• electrical current
• another magnet
• an enemy

What energy do you put IN to a generator?

• Mechanical
• Electrical
• Thermal
• Potential

When two magnets attract, they ______________

• push apart
• change color
• get colder
• pull together

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

In large generators in power plants, ___________ rotate inside a coil of wire to produce an electric current.

• Wind
• Water
• Magnets
• Circuits

What is the transfer of electricity in a generator?

• Mechanical to Electrical 
• Physical to Potential 
• Electrical to Mechanical
• Yogurt to Light

If I were to try to connect the north pole of one magnet to the south pole of another magnet, the two poles would:

• attract
• repel
• neither
• flip