Name:______Date:______

How magnets work

Summary Sheet

 A magnet can pull things made up of metals towards itself. It does not

pull the things that are not made up of metals.

Magnetic materials

Magnets can attract other magnets but they can also attract magnetic materials.

Magnetic materials are always metals but only a few metals are magnetic.

Iron is magnetic, so any metal with iron in it will be attracted to a magnet. Steel contains iron, so a steel paperclip, for example, will be attracted to a magnet.

Most other metals, for example aluminium, copper and gold, are NOTmagnetic. An aluminium drinks can, for example, will not be attracted to a magnet.

Magnets have been made by people .Nearly all magnet are made of iron

or steel. Magnets are made in different shapes and sizes. They are shaped

likebars ,rings, horse shoe. Magnet also found in nature. Loadstone is anexample of a natural magnet.

What force do magnets have?

Magnets have a force-a push or a pull. They can push or pull somethings. The force of magnet is called magnetism.

Magnetic poles

When two magnets are close, they create pushing or pulling forces on one another.

These forces are strongest at the ends of the magnets. The two ends of a magnet are known as the north pole and the south pole.

Same poles repel

If you try to put two magnets together with the same poles pointing

towards one another, the magnets will push away from each other. We say they repel each other.

In this picture two north poles are pushing away from each other (repelling each other).

### Different poles attract

If you put two magnets together with different poles pointing towards

one another, the magnets will pull towards each other. We say they attract each other.

In this picture a north and a south pole are pulling towards each other (attracting each other).

Ring magnets

Ring magnets also have a north and a south pole. The north pole is found

at the top of the ring magnet and the south pole is found at the bottom.

Ring magnets attract and repel each other in the same way that the bar magnets on the previous page showed.

The south pole of one magnet attracts the north pole of the one below.

Attract

MAKE AN ELECTROMAGNET

We can also make a magnet in our home. If we wrap a wire around an iron

nail and attach the ends of the wire to a dry cell, the nail becomes magnet.

It is an electromagnet. Ms.Mai

## Magnets - Quiz

Top of Form

1. Which of these objects would be attracted to a magnet?

A leather purse

A steel key

A wooden ruler

2. Magnets can hold three steel paperclips; Magnet B can hold five. Which is the strongest?

Magnet A

Magnet B

They are both equally strong

3. Two magnets are placed next to each other and push (repel) each other apart. What is one possible explanation for this?

The north poles of both magnets are facing one another

One magnet is made of gold

The north pole of one magnet is facing the south pole of the other magnet

4. The pushing or pulling force of a magnet is

strongest in the middle of the magnet

strongest at the ends of the magnet

the same all the way through the magnet

5. Which two metals will be attracted by a magnet?

Iron and steel

Gold and silver

6.When two magnets repel each other, they ...

push away from each other

pull towards each other

neitherpush nor pull

7. When two magnets attract each other, they ...

push away from each other

pull towards each other

neitherpush nor pull

8.Magnetism is a type of ...

electricity

gravity

force

Dubai Carmel School Name:______Date:______

The Earth and the Sun

Solar system facts:

The solar system is made up of the Sun and the 8 planets.

The Sun is a star. It is made of hot glowing gases. It gives us heat and light. It is much closer to us than the other stars.

The eight planets are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

The planets revolve around the sun. The path through which the planets revolve is called as orbit.

The Earth is the third planet from the Sun

The Earth has two movements. Rotation and Revolution.

It is the only planet in the solar system that has life.

It is the only planet that has liquid water on its surface.

About 70% of the Earth surface is made up of water and 30% of the Earth surface is made up of land.

The Earth also has a powerful force called gravity that pulls everything on its surface towards the centre of the Earth.

Rotation:It is when the Earth rotates around itself.

The earth rotates about an imaginary line that passes through the North and the South Poles of the planet Earth.This line is called the axis.

It takes about one day for one rotation of the Earth, which is equal to 24 hours.

It is the rotation of the Earth that causes day and night.

The side of the Earth that faces the Sun has daytime and the side of the Earth that is turned away from the Sun has night-time.

Revolution:It is when the Earth revolves around the Sun.

The Earth revolves around the Sun through a path called an orbit.

It takes about one year for one year for one revolution, which is equal to 365 days.

It is the revolution of the Earth which causes the 4 seasons.( Spring, Summer, Autumn, Winter)