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Magnets
Motors
Fields
Electromagnetism
Transformers
100
Refers to the properties and interactions of magnets.
What is Magnetism
100
A device that changes electrical energy into mechanical energy.
What is an Electric Motor.
100
A region of force that surrounds a magnet is called a magnetic:
What is Field.
100
The interaction between electric charges and magnets is called:
What is Electromagnetism.
100
Electric current that is always moving in one direction. A battery produces this..
What is DC or Direct Current.
200
The strength of the force between two magnets increases as magnets move...
What is closer together.
200
When there is current in a coil of wire, the forces between the coil and the permanent magnet causes the coil to ______
What is Rotate.
200
The closer magnetic field lines are to each other the ________ the magnet.
What is Stronger.
200
A wire wrapped into a coil is called...
What is a Solenoid.
200
The type of current that reverses direction in a repeating pattern is__________. Your household outlets use this.
What is AC or Alternating Current.
300
Objects that are magnetized without using any electricity are called:
What are permanent magnets
300
The generation of electric current by a changing magnetic field is called....
What is Electromagnetic Induction
300
The North ends of two magnets will __________ each other.
What is Repel.
300
A temporary magnet created when there is electric current in a wire coil is called...
What is an electromagnet.
300
A device that increases or decreases the voltage of alternating current is called...
What is A Transformer.
400
These three elements are attracted to magnets and can be made into permanent magnets:
What are Iron, Nickel and Cobalt.
400
Moving a magnet through a loop of wire produces a ...
What is a Current.
400
The strongest part of a magnetic field will be at its ________
What is Poles.
400
A device that uses an electromagnet to measure electric current is...
What is a Galvanometer.
400
This type of Transformer reduces voltage...
What is A Step-down Transformer.
500
If a permanent magnet is broken in half, each half will have both of these poles.
What is North and South
500
A generator transforms mechanical energy into _________ energy.
What is Electrical
500
Groups of atoms with aligned magnetic poles are called...
What is Magnetic Domains.
500
When an electromagnet rotates, electrical energy is converted into ____________ energy.
What is Mechanical
500
This type of transformer increases voltage...
What is a Step-up Transformer