Units 4 & 5. VERTEBRATES

EXPERIMENT: HOW TO MAKE AN ELECTROMAGNET(DIY)

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ELECTRICITY AND MAGNETISM

Electricity and magnetism

Electricity: It is a flow of electrons.

Electricity and magnetism are related.

When electric current flows through a wire, a magnetic field is produced.

Drawing:

MAGNETS

What is a bar magnet?

A bar magnet always has a magnetic field. They have two poles:

-North pole (+)

-South pole (-)

ELECTROMAGNETS

Microphones, speakers and high speed trains (maglev-magnetic levitation train) use electromagnets. Page 30 and 31.

UNIT 3. LIVING THINGS