How does the moon affect the tides?
It's not the moon's gravity alone, but the interaction of the earth and moon. One influence is the fact that the earth-moon system orbits around the common center of gravity of earth-moon. This point is called the barycenter, and it is within the body of the earth since earth's mass is considerably larger than the moon's mass. As the earth wobbles around the barycenter, it tends to push the water out from behind the barycenter. At the same time, the gravitational attraction of the moon is stronger on the water that is moon-side than it is on the water on the opposite side of earth. So there is a high tide bulge on two opposite sides of the earth at once, and of course then there are two low tide areas at roughly 90 degree angles to the high tides.
It is not the tides that affect people's moods, but a full moon. The moon is a magnet and changes the tides and can change moods in some people. People who are in a Mental Institution are often either watched very carefully during a full moon or they are kept in their rooms. It is not a myth at all that the moon can change many things on earth including a person's mood.
The fact that the Earth and Moon remain in our respective orbits and do not go hurtling into the void. That's probably the most IMPORTANT thing. As an entirely trivial side note, the gravity of the Moon and Sun contribute to the tides in the Earth's oceans. Tides Although the Sun and the moon have their own special affect on the Earth, the one thing they do affect together are the tides.
The rise and fall of the oceans, which are called tides, are alternately higher than normal, called "spring" tides, or lower than normal called "neap" tides. Eclipses do not affect the tides. However, since the tides are caused by the gravitational pull of the Sun and the Moon, eclipses always occur at "spring" tides.