Magnets
Magnets can exert forces on objects that are made from, or contain, this.
What are magnetic materials?
Elements such as gold, copper, iron, aluminum, and silver are considered this.
What are metals?
A paperclip that contains iron becomes this when a permanent magnet is nearby.
What is a temporary magnet?
The connection between electricity and magnetism is called this.
What is electromagnetism?
The production of an electric current by moving a magnet and a loop relative to each other is called this.
What is electromagnetic induction?
Every magnet has two ends or sides called this.
What are poles?
Only metals that contain the elements iron, nickel, cobalt, and a few other rare-earth elements are attracted to this.
What are magnets?
The poles of the magnetic domains in a paperclip point in random directions when one of these is not nearby.
What is a magnet?
What is an electromagnet?
When you plug a device into an outlet, instead of a battery, the electrical energy is produced by this.
What is an electric generator?
What is repel?
What are tiny magnets?
The strength of the magnetic field produced by an electromagnet depends on the amount of this flowing through the wire coil.
What is current?
In a hydroelectric plant, generators convert this into electric energy.
What is kinetic energy (from the moving water)?
If the north pole of one magnet is moved toward the south pole of another magnet, the magnets do this.
A group of magnets that have their magnetic poles pointing in the same direction is called this.
What is a magnetic domain?
Increasing the amount of current increases the strength of this.
What is the magnetic field?
Some power plants will burn this to heat water and produce steam that is used to spin generators.
What are fossil fuels?
As two magnets move closer together, the magnetic forces between the two magnets becomes this.
What is stronger?
The magnetic domains line up, and are all oriented in a single direction in this type of magnet.
What is a permanent magnet?
An electromagnet is a temporary magnet whose properties of this can be controlled.
What is magnetic properties?