Magnet Basics
Give 2 examples of things magnets are used in.
What is compass, electric motor, generator
The area around a magnet in which a magnetic force is exerted.
What is a magnetic field?
A group of atoms whose magnetic fields are lined up in the same direction.
What is domain?
A current-carrying coil of wire with many loops wrapped around a magnetic rod.
What is an electromagnet?
A magnet has two poles, the _____ and the _____.
What is north pole and south pole?
An object that has the property of attracting certain metals.
What is a magnet?
A magnet is strongest near it's _____.
What is poles?
Name three metals that are magnetic.
What is iron, nickel, and cobalt?
A current-carrying coil of wire with many loops.
What is solenoid?
Like poles _____ and opposite poles _____.
What is repel / attract?
To _______ means to pull together.
What is attract?
A magnetic field's strength depends on ______ and how magnetic the magnet is.
What is the material a magnet is made of?
When a strong magnet is brought close to a piece of iron, the iron's domains line up with the magnet's magnetic field. The piece of iron becomes _____.
What is magnetized?
The strength of a solenoid (coil of wire) depends on these two things.
What is the number of loops and amount of current?
If you cut a magnet in half you will have 2 _____. Each will have a north and south pole.
What is two magnets?
To _____ means to push apart.
What is repel?
The earth can be thought of as a _____.
What is giant bar magnet?
An electromagnet only works when this is happening.
What is the current is flowing? Electricity is connected?
A flowing electrical current creates this.
What is a magnetic field.
Magnets exert ______s on each other and on the things around them. It is the attraction and repulsion between magnets.
What is magnetic force?
The Earth's _____ is why a compass works.
What is magnetic field?
Name two things that will cause a magnet to loose magnetism.
What is heating or dropping it?
Give three examples of how electromagnets are used in everyday life.
What are car motors, stereo speakers, hair dryers, telephones, telephones...
If you think of the Earth as a giant bar magnet, the south end of the magnet is the geographic _____ pole and the north end of the magnet is at the geographic _____ pole.
What is north / south?