project unit 8 science agustin fuentes sarabia
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Electricity and
Magnetism
Electricity is made of atoms
Protons
Electrons
Positive Charge Negative Charge
Neutral or charged ?- When there is an equal number of
protons and electrons we say that the object is ELECTRICALLY NEUTRAL .
- When there are more protons that electrons we say that the object is POSITIVELY CHARGED.
- When there are more electrons that protons we say that the object is NEGATIVELY CHARGED.
Electrons can move Electrons can move from one object to
another .
Electric Current • Electric Current is the movement of
negatively charged electrons through materials .
Conductors : These materials allow electricity to flow
easily . We use these materials in electrical circuits.Insulators : Insulators don't allow electricity to flow
easily andwe use these materials to protect ourselves.
Electric Energy
Electric Circuits
Magnetism • Magnetism is a property of some
materials . They can attract or repel .If we put their identical poles togheter , the
magnets repel each otrherIf we put their opposite poles together , the
magnets attract each other
Electromagnets • An electromagnet is a device
that acts like a magnet when an electric current passes through it .
By : Agustín Fuentes Sarabia