Question

1. what causes the sky to appear as if it is rotating? a. movement of stars across the universe b. the earths orbit around the sun c. the rotation of the earth d. the position of the observer on earth

Explanation:

The Earth rotates on its axis once every 24 - hours. From our perspective on Earth, this gives the illusion that the sky (stars, planets, etc.) is rotating around us. The movement of stars across the universe is not what causes the apparent rotation of the sky from Earth. The Earth's orbit around the Sun causes the seasons and the position of the Sun in the sky over a year, not the daily - apparent rotation of the sky. The position of the observer on Earth affects the view of the sky but not the cause of its apparent rotation.

Answer:

C. The rotation of the Earth