Test: Solar System - 1

The Solar System is made up of the Sun, planets, moons, comets, asteroids, minor planets, and dust and gas. There are eight planets in our solar system. Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

The Sun is so large, and has powerful gravity which attracts all other objects in the solar system. It is at the center of the universe but its size and gravity is responsible for attracting other objects, rather than its location. Sun does not have any magnetic pull and neither do planets exert magnetic pull on sun.

Pluto is no longer the part of our solar system. Earlier, nine planets were considered part of the solar system but after recent scientific discoveries, Pluto has been excluded from this group. Jupiter, Uranus and Neptune are still considered as planets. Therefore, option c is the correct answer.  

Mercury is the nearest planet to the sun. Jupiter is the fifth planet from the sun and Earth is the third planet from the sun. 

Jupiter is the heaviest planet of the solar system. The mass of Jupiter is 1.8981×10²⁷kg.

The right order of planets from the sun is Venus, Saturn, Uranus, and Neptune.

Atmosphere on earth reflects back sun's light. Thus, earth does not absorb harmful sun rays or UV rays emitted by sun. Therefore, temperature on earth remains bearable, unlike other planets.

Neil Armstrong was the first person to walk on the moon. Kalpana Chawla was an Indian astronaut but she was not the first person to walk on the surface of the moon. APJ Abdul Kalam was the President of India and was responsible for the launch of many missiles and spaceships but he was not the first person to go to moon. Galileo made discoveries related to solar system.

Gases is the odd one out. While all other three-asteroids, planets and comets are bodies in the solar system, gases are not.

Moon is the odd one out. While Venus, Mars and Saturn are planets. Moon is not a planet. It is a satellite.