Category : 2nd Class
All celestial body, including our earth comes in our universe. Earth and other planets, all revolve around the Sun. The Sun and its planets are called solar system. Planet in our solar system has one or more satellite which is called the moon of the planet. In this chapter we will study about our universe and solar system.
Our Solar System
The sun is exactly at the center of our solar system and planets revolve all around the Sun. The closest planet from the Sun in our solar system is the Mercury, and the last planet is Neptune. Pluto is another planet which is no longer considered as a full planet. It is now called dwarf planet. There is also a region in our solar system which is populated with smaller objects and lies between Mars and Jupiter, it is called asteroid belt.
Look at the following picture of our solar system:
The hotness and coldness of the planets in our solar system is depended on the distance from the Sun. The Mercury which is nearest to the Sun is the hottest planet in our solar system.
The position of our earth from the Sun in solar system is:
Our earth is third from the sun in our solar system. Therefore, option (C) is correct and rest of the options is incorrect.
Which one of the following planets is the first planet in solar system from the Sun?
The planet Mercury is the first planet in our solar system from the earth. Therefore, option (D) is correct and rest of the options is incorrect.
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