Question

Stars appear to move from east to west. Give reason.

Answer 1

Hint :
A star is the luminous body and it is made up of hydrogen and helium.
Hydrogen and helium produce light and heat inside their cores from the churning nuclear energy.
Because of movement of air in the atmosphere it makes the starlight bend slightly when it travels from the distant star, this makes the star seem to twinkle.

Complete answer :
In the sky, the Sun, the Moon and stars all rise in the east and set in the west, because Earth spins towards the east direction.
The stars don’t really move from the east to west, it is due to earth’s rotation. Whichever direction we are facing, we feel like we are moving towards that direction, it is because the earth is spinning.
One complete rotation of earth takes 24 hours. The earth rotates with an axis and is pointed to the direction on the North Star.

Note :As we keep changing the direction to look at the star, we have the impression that the star is moving. Earth’s equator is moving at the speed of 1,600 kilometers an hour, which is about a thousand miles an hour due to Earth’s rotation. The speed decreases when we move in either direction towards the Earth’s poles.