Why are there high tides during a Full Moon?
The gravitational attraction between two objects decreases with the distance therefore the Moon's gravity pulls most strongly on the side of the Earth closest to the Moon and least strongly on the side of the Earth farthest from the Moon. The Gravitational pull is the reason of the Tidal forces. Tidal forces on the side of Earth closest to the Moon pull material towardS the Moon while on the other side of Earth pull material away from the Moon. The resulting tidal forces are highest when the moon is at opposite sides of its orbit, like full moon and new moon or first quarter and third quarter That's why tides around the equator are higher during both a new moon and a full moon (spring tide).