The Universe

The Universe There are a lot of celestial bodies in the universe: stars, planets and satellites.

Stars are big balls of gas. They produce light and heat.

Planets are celestial bodies. They rotate around a star. Satellites are celestial bodies. They rotate around a planet.

The stars and the Sun Stars are not all the same. They are different sizes and colours. Stars have different temperatures.

The Sun is a star. It is the nearest star to the Earth.

Stars form groups of stars called constellations.

It is a medium sized star.

The Sun is very important. Life exists on Earth because of the Sun.

The Planets There are eight planets in the solar system. The planets rotate around the Sun.

Jupiter is the biggest planet.

Mercury – Venus – Earth – Mars – Jupiter –Saturn – Uranus – Neptune

Mercury is the smallest planet.

Saturn has rings. Earth is between Venus and Mars.

The Earth We live on the planet Earth. The earth rotates around its axis – on imaginary line through the North and South Poles.

Most of the earth is covered by water.

The imaginary line around the middle of the Earth is called the equator. It is the widest part of the Earth.

How the Earth moves The Earth rotates around its axis. It takes 24 hours to complete the rotation. This movement produces day and night in different places on Earth.

The Earth moves around the Sun. It takes 365 days (a year) to move around the Sun. This movement produces the four seasons: spring, summer, autumm and winter.

When it is day in London, it is night in Australia.

The Moon The Moon is a satellite. It moves around the Earth.

The Moon has four phases: full moon, first quarter moon, new moon and third quarter moon.

The Moon does not produce light. It reflects the light from the Sun.

Cardinal points Cardinal points help us orient ourselves.

The Sun rises in the east and sets in the west. We can use a compass to orient ourselves or we can use the Pole Star.

The cardinal points are north, south, east and west.

Powerpoint realizado por Myriam Malo.