- High tides take place on the part of the Earth facing the Moon (Sublunar Point). The Moon’s gravity pulls the water slightly away from the earth. Thus there is piling or heaping of water just below the moon.
- It is also High tide on the opposite side of the world(Anti Podal Point). There the tug of the Moon’s gravity is weaker & it is the centrifugal force of the earth’s spin which pushes the water outward.
- As the Earth turns, the part of the sea that was high moves away from Moon’s gravity. The water sinks back down. After about six hours, this part of the sea is all the way down to what is called Low Tide.
- Each Part of the Sea has two high tides each day- one when it is beneath the moon & one when the Moon is on the opposite side of the earth. Similarly there are two low tides.
