the brightness of a the light appears to change based on the distance
stars and constellations move across the sky
The sun appears to be much smaller than the earth, in fact if you held your thumb up just right it could cover the size of the sun.
Is the sun really smaller than the Earth?
How is it that we see the sun in the day and other stars at night?
While on the playground at lunch recess, you notice that your shadow looks different than it did when you arrived at school. You also notice the change in shadows of other things, like the school, the flagpole, and other students.
Why does the Sun appear to move across the sky?
How long does it take the Earth to move around the sun?
How long does it take for the Earth to spin around one time on its axis?