Unit 6 Day 4 Opener

Both magnets and electromagnets have a N and S pole.

• True
• False

Both magnets and electromagnets need electric current to create a magnetic field.

• True
• False

Electrical current in a wire will produce a magnetic field.

• True, dude.
• Totally false, fool.

Both magnets and electromagnets can turn off.

• True
• False

Copper is a magnetic material.

• Always true.
• Sometimes true.
• Never true.

Magnetic field lines always point...

• ...from N to S.
• ...from S to N.
• ...from N to N.
• ...from S to S.

Which subatomic particle is the cause of magnetism?

• Protons
• Neutrons
• Electrons
• Megatrons

What happens to electrons when they're causing magnetism?

• They move in a wire.
• They form bonds with other atoms.
• They are swimming in the ocean, like the fish in Finding Nemo.
• They are lined up and working together.

When something is moving, what kind of energy does it have?

• Gravitational potential energy.
• Elastic potential energy.
• Thermal energy.
• Mechanical energy.

Which kind of energy is it if there's electrical current flowing in a wire?

• Sound energy.
• Light energy.
• Electrical energy.
• Proton energy.