Concept 4: Magnetism

What is the direction of magnetic field lines?

• North to South

• South to North

• East to West

• West to East

Which force can work at a distance?

• Frictional Force

• Tension

• Normal Force

• Magnetic Force

Magnetic poles can be isolated

• True

• False

What happens when you break a magnet in half?

• It makes two new magnets

• It creates a North magnet and a South magnet

• It becomes stronger

• It becomes weaker

Which material can become magnetized?

• Glass

• Plastic

• Iron

• Wood

Opposite poles attract

• True

• False

Like poles attract

• True

• False

Which of these is necessary to create an electromagnet?

• Rubber Bands

• Plastic Pole

• Power Source

• Permanent Magnet

How can you increase the strength of an electromagnet?

• Decrease the current

• Decrease the number of wire loops

• Increase the number of wire loops

• Use plastic wire

Where are magnetic fields the strongest?

• At the poles

• At the middle

• Everywhere is the same

• At the equator