JSS1 Basic Science Lesson Note on The Earth in Space

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TOPIC: FORCE

SUB-TOPIC: THE EARTH IN SPACE

The Solar System

The planet earth, on which we live, is moving through space all the time. It is going round the sun. In doing this it carries us all through space. The earth travels through the space but we do not realize this because the air around the earth is carried along with it. The sun together with all the bodies which revolves round it makes up the solar system. The solar system consists of the sun, eight planets and their moons along with dwarf planets, comets and asteroids which revolve round the sun.

The solar system is divided into inner and outer parts. The inner part contains the Sun, Mercury, Venus, Earth and Mars while the outer part contains Jupiter, Saturn, Uranus and Neptune. The two parts are demarcated by asteroid belt.

The Eight Planets are:

1. Mercury
2. Venus
3. Earth
4. Mars
5. Jupiter
6. Saturn
7. Uranus
8. Neptune

Earth Rotation and Revolution

Rotation of the Earth:

The earth rotates about an axis through the north and south poles. As the earth rotates different parts of its surface come into the light from the sun. The area that is receiving light from the sun has day, and that which is away from the sun has night. The time it takes to rotate round its own axis is one day (24 hours).

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