Electromagnetism

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

Tags

NGSS.MS-PS2-3

What happens to the strength of a magnetic field as you move away from the magnet?

• The strength of the magnetic field increases.

• The strength of the magnetic field doesn't change.

• The strength of the magnetic field is doubled.

• The strength of the magnetic field decreases.

Tags

NGSS.MS-PS2-3

The picture is an example of an:

• Electric circuit
• Electromagnet
• Electric nail
• Electric power cell

Tags

NGSS.MS-PS2-3

To make this electromagnet stronger you could:

• use less wire

• have fewer wire coils around the nail

• have more wire coils around the nail

• use a plastic core

Tags

NGSS.MS-PS2-3

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is/are the difference(s) between a magnet and an electromagnet? (Can be more than one answer)

• An electromagnet can be turned on/off.

• A magnet can be turned off.

• An electromagnet is stronger.

A _______________ is a current-carrying coil of wire with many loops.

• magnet

• electromagnet

• solenoid

• compass

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A _____________ transforms mechanical energy into electrical energy.

• generator

• electromagnet

• circuit

• magnetic field

Increasing the number of coils in an electromagnet will _________ the power of the magnet.

• decrease

• increase

• not affect

Tags

NGSS.MS-PS2-3

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.MS-ETS1-2

NGSS.MS-PS2-3