Show:
Magnets and Magnetism 2
Magnets and Magnetism 1
Magnetism from Electricity
Electricity from Magnetism
Potpourri
100

Many people think that I am a pure color. What "color" am I?

What is white?

100

I am electromagnetism. I am comprised of these two things.

What are electricity and magnetism?

100
the study of the interaction between electricity and magnetism
What is electromagnetism
100
What did Faraday and Henry discover?
That you a magnetic field can induce or create an electric current.
100
A device that increases or decreases the voltage of alternating current.
What is a transformer
200

We are the pure colors. Name three of us.

What is ROYGBIV?

200

This object at the center of the solar system releases a tremendous amount of electromagnetic energy.

What is the Sun?

200
A coil of wire that produces a magnetic field when carrying an electric current.
What is a solenoid
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

I am a type of electromagnetic energy that will give you a tan.

What is Ultra-violet light?

300

We are groups of atoms inside a magnet that spin in the same direction.

What are domains?

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

You have seen these cause water to move toward the shore on the beach. Electromagnetic energy is also transported this way.

What are waves?

400

We are two forms of electromagnetic energy released by the Sun.

What are gamma rays, x-rays, ultra-violet, visible light, infrared, microwaves and radio waves?

400
What is an electric motor?
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
What are 4 ways for a magnet to lose it's magnetism?
1) drop 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

I am the direction that waves cause objects to move in.

What is up and down?

500

I was exposed to a large amount of gamma rays. I become green and very strong when I get angry.

Who is the Hulk?

500
What 2 ways can you increase the power of an electromagnet?
By increasing the number of loops of wire around the solenoid and increasing the current.
500
Explain the 3 steps of how an electric generator works
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 directin.
500
Explain the difference between a step-up and a step-down transformer.
A step-up transformer increases voltage and has more coils of wire in the secondary coil. A step-down transformer decreases voltage and has more coils on the primary coil.