project unit 8 science agustin fuentes sarabia

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