Question

(c) What do you understand by rotation? Do all planets rotate?
(d) What is revolution? Why do planets revolve around the Sun?​

Answer 1

Answer:

the movement of planet on its on axis is rotation

yes all planets rotate

b) the movement of planets around sun is revolution

planets revolve around sun because of the gravitation of sun

Answer 2

ROTATION :-

When the earth moves along it's own axis, it's called Rotation.Yes.....all the planets rotate about its axis.

REVOLITION :-

When the Earth moves around the sun, this is called Revolution. All the planets revolve around the sun because sun is the only natural source of light and heat, dur to which we are alive today.....