What is a magnet?
A Magnet is an object which has a magnetic force
Some natural magnets are found in...
nature
Define a permanent magnet?
A permanent magnet always gives off a magnetic force which cannot be turned off
How can we observe a magnetic field?
With iron filings
What is a magnetic field?
the area that fills a space where a magnetic force works
What are the two things magnets have?
North and south pole
What do two north and two south poles do to eachother?
repel
How does a compass work?
It uses earth's magnetic north pole
Why does the Earth have a magetic field.
Due to its iron core
Electromagnets are permanent magnets? true or false
False
What is needed to turn a magnet into a electromagnet?
Electricity - a power source and a magnet
Define an electromagnet
When a magnetic field is created by elecrtricity to turn something into a temporary magnet
What creates an electromagnet an open or closed circuit?
closed circuit
What is a benefit of an electromagnet
They can be turned on and off e.g lifting heavy objects
