Magnetism Basics
What does magnetism do to magnetic materials?
It pulls or pushes them.
What are the two poles every magnet has?
North and South
Is iron magnetic?
Yes
What does “magnetize” mean?
Turning an object that is not magnetic, into a temporary magnet
A magnet can attract without ____ the object
Touching
Is magnetism a contact force or non-contact force?
Non-Contact Force
What happens when opposite poles are near each other?
They attract (come together)
Is wood magnetic?
No
What can rubbing a magnet on a paperclip do?
It can make the paperclip magnetic for a short period of time
Which pole is attracted to the south pole?
North Pole
Name three materials that are magnetic.
Iron Nickel Cobalt
What happens when the same poles are near each other?
They repel (push away)
Name a metal that is not magnetic.
Aluminum
In which direction should you rub a magnet to magnetize an object?
The same or one direction
Can you make a paperclip magnetic and how?
Yes, through rubbing or striking
What do electrons do inside magnetic materials to create magnetism?
They spin in the same direction
True or False: Magnets need to touch something to attract or repel it.
False
Do all metals stick to magnetics?
No
What realigns the atoms when you strike an object to magnetize it?
Earths Magnetic Field
What can happen if a strong magnet touches a credit card or hard drive?
It can erase or damage the information stored on them
What kind of materials do magnets stick to?
Objects made of iron, nickel, and cobalt. For example a paper clip or metal spoon.
If a magnet falls off a plastic surface, what does that tell you?
Plastic is not magnetic
What tool uses Earth's magnetic field to show direction?
Compass
Why must you point an object north–south before striking it to magnetize it?
So its atoms can align with Earth's magnetic field.
Why does Earth act like a giant magnet?
Because it has a core made of molten iron and nickel that creates a magnetic field.