Explanation:
Many people are under the impression the phases originate from the shadow cast on the Moon by Earth. Some think the Moon is changing shape because of clouds. Alternatively, the movement of the Moon based only on its position in relation to Earth and the Sun. The Moon doesn't really create its own light, it actually reflects the light of the Sun, as all the planets do.
They are longitudinal waves
If this is about simple machines the answer is: Inclined plane
Newton’s third law is a force is a push or pull that acts upon an object as a result of another object.. A shot gun when fired pulls back when a force (you pulling the trigger) is acted upon it. This is how it relates. A rifle has less kick than a shot gun because the rifle is smaller and has less of a force than a shot gun.