Current Affairs 2nd Class

Category : 2nd Class

Our Universe

All heavenly bodies like sun, moon, earth comes in our universe.

Our Solar System

Our solar system consists of sun, eight planets and their satellites. Sun is at the centre of the solar system and all the eight planets revolve around the sun.

v    Sun is the biggest and hottest body in our solar system. It is a hot ball of gases. It has its own light.

v    Mercury - It is the smallest planet which is nearest to the sun.

v    Venus - is also known as morning and evening star. It is on the second position from the sun.

v    Earth - We live on this planet and it is on the third position from the sun. It is also known as the blue planet.

v    Mars - It is on the fourth position from the sun. It is also known as the red planet.

v    Jupiter - It is the biggest planet of the solar system and is on the fifth position from the sun.

v    Saturn - This planet is on the sixth position from the sun.

v    Uranus - is on the seventh position from the sun. It is the second coldest planet the solar system.

v    Neptune - is on the eighth position from the sun and is the coldest planet of the solar system.

Inner Planets

The planets which revolve closer to the sun are inner planets. These are: Mercury, Venus, Earth and Mars.

Outer Planets

Jupiter, Saturn, Uranus and Neptune are outer planets of the solar system.

The Moon

Our earth has one moon which revolves around the earth. The Moon of earth is also called its natural satellite. The moon does not have its own light.

Rotation of Earth

Movement of earth on its own axis is called rotation of the earth. Earth takes 24 hours to complete one rotation.

Revolution of Earth

Movement of earth around the sun is called revolution of the earth. Earth takes 365 1/4 days to complete one revolution around the sun.