Magnets attract metal that have __________ in them.
Iron or steel
100
Some magnets use ________________ to work.
electricity
100
An object that is magnetic but will only be a magnet for a short time is called _________________
a temporary magnet
100
True or false: The mineral magnetite is magnetic
TRUE!
200
To pull toward
attract
200
Paper clips and pins are both _____________ (vocab word)
magnetic
200
Magnets that use electricity are called
electromagnets
200
What is a generator?
A generator uses a magnet to make electricity
200
Magnets stick to Mrs. Smith's white board. What can you conclude that the white board is made out of?
iron or steel
300
To push away
repel
300
Why are paper and plastic not magnetic?
they do not have iron or steel in them
300
True or false: Electromagnets can be turned on and off?
true
300
True or false: Bar magnets and horseshoe magnets are permanent magnets?
True
300
Can magnets sort plastic and glass into different groups? Why or why not?
No, because plastic and glass are NOT magnetic
400
A magnet made by passing an iron object near another magnet
temporary magnet
400
All magnets have two ends called ____________
poles
400
You can make an electromagnet using these three items?
wire, screw/nail, battery
400
Our school uses a generator for emergencies! When would we need to use a generator?
If the electricity goes out...
400
I saw a crane lifting steel pieces of cars into a pile. What can I infer about this crane?
It is an electromagnet -- using electricity to form a magnet. It is a machine that can be turned on and off.
500
A magnet that can be turned on and off by using electricity
electromagnet
500
List 3 different uses of magnets
keep doors closed, holds things, help open cans, keep toy trains together, help us build, etc..
500
List 3 uses of electromagnets
storing data on computers, make roller coasters go faster and slow down, trains on special tracks that have magnets, devices that can pick up and sort metals
500
What is the difference between an electromagnet and a generator?
An electromagnet uses electricity to make a magnet.
A generator uses a magnet to make electricity.