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What machine in hospitals uses magnets?
Magnetic Resonance Imaging (MRI) Machine
What does all matter consist of?
Atoms
Do electrons have a positive or negative charge?
Negative
What do electrons orbit around?
The nucleus
What force are electricity and magnetism two aspects of?
Electromagnetism
Who discovered that electricity and magnetism are connected?
Oersted
What did Ampere discover?
The Electron
Who invented the first simple electromagnetic motor?
Faraday
What does an electromagnet produce when switched on?
A magnetic field
An electromagnet can be used to separate mixtures containing which metals?
Iron or steel
True or false: Bar magnets CAN'T be switched on or off.
True
What can we use to show a magnetic field?
Iron filings
How can we identify a magnet?
By testing to see if it repels another magnet
How do we show bar magnets that are attracted to each other in a diagram?
With lines that connect or extend from one magnet to the other.
How do we show bar magnets that repel each other in a diagram?
The lines don't connect or join up.
Where is Earth's magnetic north pole?
In the South Pole
