magnetism Talkowski

opposite poles

North and south pole. Opposite poles attract N+S magnet ends will connect

Earth's magnetism

The earth is like a big magnet with a North and a South pole. The magnet is buried inside the earth and magnetises both the north and south pole

lodestone

a rock that is a natural magnet found in the Earth made of magnetic iron ore

Compassess have needles that

are magnetic. The invisible pull of Earth's magnetic field causes the needle to point north

magnet

attracts iron, nickel, steel and colbat

a magnetic field is

invisible

Magnetic field lines

lines that map out the magnetic field around a magnet. the lines are closest to each other near the poles where the magnetic field is the strongest

Magnetic field goes through the

magnet

what does not attract a magnet?

magnets are not attracted to all objects. cotton, most rocks, fabric , wood, rubber are some things that do not attract a magnet

north seeking pole

part of the magnet that seeks the Earth's north pole. The magnet will come to rest pointing toward the North pole of Earth

south seeking pole

part of the magnet that seeks the Earth's south pole. The magnet will come to rest pointing toward the South pole of Earth

3 types of magnets

permanent magnets, temporay magnets, electromagnets

temporay magnets

pieces of metal like a paper clip or nail can become magnetized when placed on a strong magnetic field but loose the magnetic field when the magnetic field disappears. These temporay magnets can become demagnized quickly by dropping them or putting them in a fire.

like poles

repel each other N<-->N These poles do not like each other, you can not get a magnet's S pole to connect with another magnet's S pole

permanent magnets

stay magnatized once they are magnatized. for example, magnets we hang on the fridge down at the beach house

seeking

the act of searching for something

magnetic field

the area around a magnet where the magnetic force acts is called the ________________. The lines in the picture is the lines of force. It is where the field is the strongest

if you break a magnet into smaller pieces

the new pieces will each have their own north and south poles

Every magnet has

two poles. the north seeking pole and the south seeking pole they are abbreviated with N and S

If a compass points north

you can navigate (find) east, west and south

electromagnets

A magnet created by electricity, only works when surrounded by electric field