What causes low and high tide?
The moon is the main cause of tides, but the sun also plays a role. The moons gravity causes the high tide to form on both the earth side nearest the moon and on the the far side of the earth away from the moon. Same holds true for the sun but the sun’s effect is about 1/2 or so of the moon’s. Basically the difference in the moon’s gravity from the earth’s point directly under moon to earth point directly opposite the moon stretches the earth, while rock doesn’t stretch much the water does and so we get a high tide underneath the moon and one on the opposite side, a low tide happens at a locations perpendicular to this line. Since both the moon and sun cause tides when the moon is full or new they are both in line and the resulting spring tide is greater (both high and low tides) than the the neap tide that happens when the moon is either first or last quarter. Due to friction in the ocean between the water and the shoreline the tides lag behind the moon and therefore are east of the m
