Show:
Magnets and Magnetism 1
Magnets and Magnetism 2
Magnetism from Electricity
Electricity from Magnetism
Misc.
100
Any material that attracts iron
What is a magnet
100

Magnetic poles are always in _____________

What is in pairs?

100
the study of the interaction between electricity and magnetism
What is electromagnetism
100

What did Faraday discover?

What is a magnetic field that can induce or create an electric current?

100
A device that increases or decreases the voltage of alternating current.
What is a transformer
200

What 3 properties do all magnets have?

What is when 1) They have a north pole and a south pole 2) They exert a force 3) They are surrounded by a magnetic field

200

In magnetic forces, like poles ______________ and opposite poles ______________

What is repulsion and attraction?

200

A coil of wire that produces a magnetic field when carrying an electric current.

What is a solenoid/copper wire

200
The process by which an electric current is made by changing a magnetic field
What is electromagnetic induction
200
What causes an aurora or "northern lights"?
An aurora is formed when charged particles from the sun hit oxygen and nitrogen in the air.
300
The region around a magnet where the magnetic force can act
What is a magnetic field
300

Magnetic needle that points to magnetic north.

What is compass?

300
A coil of wire wrapped around an iron core
What is an electromagnet
300
This machine uses electromagnetic induction to change mechanical energy into electrical energy.
What is an electric generator
300
What do scientists think causes the Earth's magnetic field?
The movement of electric charges in the Earth's core.
400

What makes something magnetic?

What is when it generates a magnetic field causing attraction with iron, nickel, or cobalt?

400

What happens when you cut a magnet into 2 pieces?

What is creating two different magnets with two different poles?

400

What is an electric motor?

What is a device that changes electrical energy into mechanical energy.

400

Faraday's experiment demonstrated that the ___________ current was made only when the _______________ field was changing.

What is electric current and magnetic field

400

Give a way for a magnet to lose its magnetic property.

What is 1) dropping the magnet 2) putting the magnet in a strong magnetic field 3) Increasing the temperature 4) hitting the magnet all of them make the domains inside the magnet lose alignment.

500

Name 2 kinds of magnets and what they are made of.

What are ferromagnets that are made of iron, cobalt, nick; and what is electromagnets that are made from a magnet and an electric current?

500

Why does a compass needle point north?

What is the magnetic south pole is the north pole of the earth?

500

What 2 ways can you increase the power of an electromagnet?

What is increasing the number of loops of wire around the core and increasing the current?

500

Explain the 3 steps of how an electric generator works

What is 1) A crank is turned rotating the wire coil through the magnetic field 2) This creates an electric current in one direction. 3) As the coil continues to rotate, the electric current continues in the opposite direction?

500

What always experience a force of attraction and looses its magnetism when removed from a magnetic field?

What is an Induced Magnet?