Magnets
Electromagnet
Generators & Motors
Energy & Conservation
Miscellaneous
100
Magnetism is the strongest here.
What are the poles?
100
The process of getting electrons to move though a wire by changing its magnetic field.
What is induction.
100
The definition of a generator.
What is a machine that turns mechanical energy into electrical energy.
100
Power is measured in units called...
Watts
100
Magnetism comes from this.
What are moving electrons.
200
2 things that cause earths magnetic field.
What is that 1. It has an iron or nickel core 2. The earth rotates
200
Describe the 3 main parts of an electromagnet.
1. source of electricity 2. a conductor 3. an iron or nickel core
200
The definition of an electric motor.
What is a machine that uses an electromagnet to change electrical energy into mechanical energy.
200
Is equal to 1000 watts.
What is a kilowatt?
200
A Maglev train can travel fast because of this reason.
The Maglev train is on a magnetic field so it has no friction to slow it down.
300
A temporary magnet is made this way.
What is by taking a magnetic substance an stroking it against a permanent magnet?
300
The definition of an electromagnet.
What is a magnet created by an electric circuit flowing through a coil of wire wrapped around a solid iron or nickel core.
300
A system that connect power plants all around the country.
What is an electric power grid?
300
The amount of electrical energy used during a certain amount of time.
What is Electric Power?
300
This happens to magnetic domain when they are magnetized.
What is when they line up.
400
3 materials that stick to magnet.
What are 1. iron 2. nickel 3. cobalt
400
3 devices that use electromagnets.
1. cars 2. planes 3. doorbells
400
The 6 types of renewable energy.
What is 1. hydroelectricity 2. solar energy 3. geothermal energy 4. wind energy 5. tidal energy 6. biomass energy
400
What does MRI stand for?
Magnetic Resonance Imaging
500
Describe what happens to magnets in this situation. a. north pole to north pole b. south pole to south pole c. south pole to north pole d. north pole to south pole
a. repel b. repel c. attract d. attract
500
Describe a doorbell button.
A switch that opens and closes an electric circuit connected to an electromagnet.
500
4 parts of an AC motor.
1. A rotating wire coil or armature 2. An alternating electric power source 3. Brushes that transfer the electric current to the armature. 4. A permanent magnet(s) that use the electric current to cause the wire armature to turn.
500
Name at least 3 ways to conserve energy.
1. Turn off lights when no one is in the room 2. During the day, open curtains instead of turning on lights. 3. Close doors and windows while heating or cooling a room. 4. Conserve water 5. Turn off electrical devices when not in use.
500
Can you get a magnet with just one pole? Explain.
No; when ever you brake a magnet in half it will always have 2 poles.
M
e
n
u