Magnetism, Magnetic fields, and Electromagnetism

Q: What are magnets?

A: Materials that can attract certain materials and also attract or repel other magnets.

Q: What kind of force surrounds a magnet?

A: A magnetic force that can push or pull other magnets.

Q: What are the two ends of a magnet called?

A: North and South poles.

Q: What happens when like magnetic poles are near each other?

A: They repel (push away).

Q: What happens when opposite magnetic poles are near each other?

A: They attract (pull together).

Q: What are magnetic fields?

A: Invisible areas of force around magnets where magnetic effects can be felt.

Q: How can we see magnetic field patterns?

A: By using iron filings around a bar magnet.

Q: In which direction do magnetic field lines flow?

A: From the North pole to the South pole.

Q: What is an electromagnet?

A: A magnet created by an electric current flowing through a coil of wire around an iron core.

Q: What happens to a compass near a wire with electric current?

A: Its needle changes direction due to the magnetic field created by the current.

Q: How can you make an electromagnet stronger?

A: Increase the current or voltage in the circuit.

Q: Why are electromagnets useful?

A: They can be turned on and off and provide strong, controllable magnetic forces.

Q: Where might electromagnets be used?

A: In wrecking yards to lift cars or in devices that need controllable magnetic force