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w/c 22nd JuneWhich materials are magnetic?
Magnets
What are they?
What are they for?
Where have you seen magnets being used?
Consider these statements – we will find out if they are true or
false at the end!
True or False?
All magnetic material is made of metal.
True or False?
All metals are magnetic.
True or False?
Wood is magnetic.
True or False?
Magnets stick together.
True or False?
Magnets are not very useful.
True or False?
There are different shapes of magnet – bar, horseshoe…
Click the link to find out more:https://www.bbc.com/bitesize/articles/zw889qt
Let’s get technical!
Magnets have an invisible field that forces other objects to react to its properties.
This powerful force is called the magnetic field. Magnetic fields have particles called electrons that actively shift and move within the field. These electrons continuously revolve around the core of the magnet (its poles), creating energy that attracts objects.
Because of this, a magnet has the ability to draw objects towards itself. This ability is called magnetism, caused by the force field that magnets create through its electrons (negative charge) and protons (positive charge).
Examples of magnets around us…
Task 1Use the slides to help you complete the printed worksheet
‘w/c 22nd June magnet vocabulary’
Task 2Let’s investigate!
How might we find out if something is magnetic or not
magnetic?
You will need:
A magnet (this could be a fridge magnet, a magnet from a game)
A range of objects / materials to test
Printed worksheet ‘w/c 22nd June Science Magnetic Materials Investigation’
Let’s make predictionsWhich objects do you think are magnetic or not magnetic? Why?
What have you found out?What have you noticed?
Magnetic forces can act without direct contact, unlike most forces, where direct
contact is necessary (for example, opening a door, pushing a swing).
Your Findings
Magnetic MetalsMagnetic materials are always made of metal, but
not all metals are magnetic.
Iron is magnetic, so any metal with iron in it will be attracted to a magnet. Steel contains iron, so a steel
paperclip will be attracted to a magnet too.
Most other metals, for example aluminium, copper and gold, are NOT magnetic.
True or False?
All magnetic material is made of metal.
True
All magnetic material is made of metal.
True or False?
All metals are magnetic.
False
Was everything attracted to the magnet today?
True or False?
Wood is magnetic.
False
Wood is not magnetic. It is not attracted to a magnet.
True or False?
Magnets stick together.
False
Magnets ‘attract’ each other, they do not stick together.
True or False?
Magnets are not very useful.
False
Magnets are very useful. They are used all around us. What examples can you list?
True or False?
There are different shapes of magnet – bar, horseshoe…
True
There are different shapes of magnet – bar, horseshoe…
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