Question

what is Rotation
what is twilight

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Answer 1

Explanation:

Rotation :- movement in circles around a central point.

twilight :- the time after the sun has set and before it gets completely dark.

Answer 2

Ques ; What is rotation ?

Answer: A rotation is a circular movement of an object around a centre of rotation. If three-dimensional objects like earth, moon and other planets always rotate around an imaginary line, it is called a rotation axis. If the axis passes through the body's centre of mass, the body is said to rotate upon itself or spin.

Ques: what is twilight

Answer:  the soft glowing light from the sky when the sun is below the horizon, caused by the reflection of the sun's rays from the atmosphere.