Why Does the Moon Look Like It Changes?

shes hot

How does the light from the Sun shines the moon fully(Full Moon) when the Earth is blocking the light?

We've actually got a video on that topic called "What Causes an Eclipse of the Moon?"

SO the AD calendar is not base on the moon?

If the ancient historians are to be believed, no, the calendar that evolved into our current calendar started out with ten months and wasn't based on the phases of the Moon at all. Even when the other two months were added, our calendar still is based on the position of Earth in its orbit around the Sun, not the phase of the Moon.

how comes we dont feel the earth moving.

That's a good question. I've been wondering this myself.

what u "feel" or expect from moving is due to acceleration. constant uniform motion dosnt have any acceleration so you dont feel the earth moving.

It's also due to the fact that any motion "felt" is relative to our perspective. We can't see the motion of the Earth in everyday life, as atmosphere tends to stay in place due to gravity, so there is no evident motion.

gravity pulls us down, and since we're so small on earth, and the earth actually rotates so fast, it is impossible to feel it