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Electricity and Magnetism
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Two magnets can attract or ___ each other.
repel
Electricity is the movement of ____ from one ___ to another
electrons / atom
True or false: electromagnets can't be switched off
False
Ampere discovered the electron but he called it the ___ ___
electrodynamic molecule
Microphones work by transforming sound vibrations into ____
electricity
The cone inside a speaker is attached to a coil that moves through a ____ ____
magnetic field
A conce vibrates in this device in order to make sound? (maglev, speaker, microphone, electric bell)
speaker
the name "maglev" means ___
magnetic levitation
The maglev is a ___ that uses ___ to move forward
train / magnets
A hammer hits a bell to produce sound. is it a Maglev, speakers, microphone or electric bell?
electric bell
A moving magnet can produce ___ with a turbine.
electricity
Who invented a simple electromagnetic motor: Oersted, Ampere or Faraday?
Faraday
Who discovered the particle that we now call the electron: Oersted, Ampere or Faraday?
Ampere
Who discovered that electricity and magnetism are connected: Oersted, Ampere or Faraday?
Oersted
The North Pole is actually the ___ ____ of the magnetosphere
south pole
The magnetosphere protects the Earth from ___
solar radiation (the harmful rays of the sun)
the centre of the Earth is made of ___
liquid iron
The Earth's magnetic field is called ___
the magnetosphere
When two magnets repel, the lines ___
extent away from each other
When two magnets attract each other the lines___
extend from one magnet to the other
The direction of the _____ of electrons determines if a substance will be magnetic?
orbit
When an electron leaves its orbit, the atom becomes ____ charged
positively
In a stable atom, there are the same number of
protons and electrons
What do you need to make an electron leave its orbit?
a force
Do neutrons have a charge?
No, they are neutral
Protons have a ___ charge
positive
Electrons have a ___ charge
negative
Particles that orbit the nucleus are called ___
electrons
An atom has a nucleus made up of ___ and ____
protons and neutrons
All matter is made up of ____
atoms
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