Electromagnetism

Front

What materials can a magnet pick up?

Back

A magnet will pick up objects made of iron or steel.

Front

How does the strength of a magnetic field change with distance?

Back

The magnetic field of a magnet is weaker further away from the magnet.

Tags

NGSS.MS-PS2-3

Front

What is an electromagnet?

Back

An electromagnet is a device made up of a battery, wire, and an iron core that produces a magnetic field when electric current flows through the wire.

Front

What happens to positively charged atoms in relation to negatively charged atoms?

Back

Atoms that have a positive charge will be attracted to atoms with a negative charge.

Front

What do magnetic field lines represent when magnets repel each other?

Back

Magnetic field lines represent the direction and strength of the magnetic field; when magnets repel, the lines do not intersect.

Front

What is a magnetic field?

Back

A magnetic field is the area around a magnet where magnetic forces can be detected.

Tags

NGSS.MS-PS2-5

Front

What is the difference between a permanent magnet and an electromagnet?

Back

A permanent magnet produces a constant magnetic field, while an electromagnet's magnetic field can be turned on and off with electric current.

Front

What is the role of the iron core in an electromagnet?

Back

The iron core enhances the magnetic field produced by the electromagnet.

Tags

NGSS.MS-PS2-3

Front

What is the principle of magnetic attraction?

Back

Magnetic attraction occurs between opposite poles of magnets (north and south) or between charged particles of opposite charges.

Tags

NGSS.MS-PS2-3

Front

What happens to the magnetic field when the current in an electromagnet is increased?

Back

The strength of the magnetic field increases when the current in an electromagnet is increased.

Tags

NGSS.MS-PS2-3