Electricity and Magnetism

All magnets have 2

• fields
• colors
• poles
• all of the above

If you put a __________________ pole and a south pole together, they attract. 

• North
• South
• Positive
• Magnetic

Magnets can attract or __________________ other magents

• keep
• react
• repel
• destroy

A coil of wire acts like a magnet when __________________ flows through it. 

• water
• current
• voltage
• food

This is called an __________________.

• bomb
• circuit
• electromagnet
• coil

You can make an electromagnet stronger by: using a __________________ material for the core.

• soft
• conducting
• magnetic
• hard

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.

Tags

NGSS.HS-PS2-5

At the geographic North Pole, a compass will point south.

• True
• False

Electric motors are devices that convert _____ energy into  _____ energy.

• electrical; mechanical
• mechanical; electrical
• chemical; potential
• mechanical; kinetic

Where is Earth's magnetic field strongest?

• Along the outside lines
• Along the inside lines on either side
• Where the lines are close together at the poles
• In the space outside of the lines