6º NATURAL SCIENCE - ESQUEMA TEMA 5

Buenos días, aquí os dejo el esquema del tema 5 para que sea copiado en el cuaderno

Magnetism

Magnets attract materials like metals, iron, nickel…

Types of magnets:

1. -         Artificial, made in factories
2. -          Natural (magnetite)
3. -          Permanent
4. -          Induced (temporary)

Magnetic poles.
 If you put together both north or south side poles, they will repeal each other, whereas if you put together north and south they will attract.

The Earth’s magnetism

The liquid iron inside the Earth acts like a giant iron. This magnetic field helps us from radiation from the Sun, without it we would die!

The compass

It is an instrument. It always points to the North with its needle.

Magnets and electromagnets

Electromagnetism is the relationship between electricity and magnetism

                Magnetic materials (metallic: silver, nickel, gold…)

                Non-magnetic materials like wood, rubber, plastic

Magnets are everywhere

1) Homes: blenders (batidoras) hard disks (discos duros) doorbell (el timbre de la puerta)

2) Healthcare: magnetic resonance imaging (resonancia magnética) to show our internal organs like the brain, heart…)

3) Transport: maglev trains (el tren bala de Tokio 603km/h)