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