GENERAL KNOWLEDGE

GK

SOLAR SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is a planet?
A
a swirling ball of gases
B
a star
C
a huge ball made out of rock
D
a large object that orbits a star
Explanation: 

Detailed explanation-1: -A planet is a celestial body that (a) is in orbit around the Sun, (b) has sufficient mass for its self-gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium (nearly round) shape, and (c) has cleared the neighbourhood around its orbit.

Detailed explanation-2: -A satellite can be natural, like Earth or the moon. Many planets have moons that orbit them. A satellite can also be man-made, like the International Space Station. Planets, comets, asteroids and other objects in the solar system orbit the sun.

Detailed explanation-3: -According to the Kepler’s Law of Orbits, the planets revolve around the star in elliptical orbits.

Detailed explanation-4: -A planet is a large celestial body that revolves around the sun in fixed orbits. Planets do not have any light of their own but reflect the light of the sun. Planets also do not twinkle like stars because they are much closer to us.

There is 1 question to complete.