The sun is not moving the earth is
If by "seem to move" you are referring to perspective then it is true, since the Earth rotates on an axis and revolves around the sun, if we do not know that it is the Earth that is moving, it would seem that stars move across the sky, except for the pole star Polaris, which is aligned with the north axis and remains "fixed" in its place.
since earth rotates, the constellations will seem to move across the sky.
...rotation.
Stars seem to move in the sky due to the Earth's rotation. It creates the illusion that the stars are moving across the sky when, in reality, it's the Earth that is rotating on its axis. This phenomenon is known as diurnal motion.
No, but it looks like its moving 'cause the earth is spinning.
Fractions of light through nitrogen in the atmosphere.
The apparent movement of the sun and stars across the sky is due to the rotation of the Earth on its axis. As the Earth rotates, it gives the illusion that the sun and stars are moving across the sky from east to west. This movement is responsible for the cycle of day and night.
Yes because stars move so they would move through the night sky!!!! If you were to watch a constellation, it would appear to move through the sky but really the Earth's rotation and revolution about the Sun gives the appearance of the stars moving.
Because as you stand there, the earth turns your face from west to east. As time goes on through the day and night, you have to turn your face farther to the west, to see the same sky things that used to be right in front of you. Since you don't feel yourself turning, it looks to you as if the sky things are moving from east to west.
Lightening.
In this context, the sky doesn't move, but the earth rotates creating the illusion that the sky moves (unless you mean clouds which is a different issue altogether.). The sky appears to move from east to west.
The Sun does move from North to South in the sky (or the other way) just a little bit each day. This is caused by the tilt of the Earth's axis combined with the Earth's orbital motion around the Sun each day. So, in the winter the Sun is lower in the sky than in the summer. In the Northern Hemisphere that means the Sun is further South in the sky.