Here's why:
* Gravity's Influence: Tides are primarily caused by the moon's gravitational pull. The moon's gravity pulls the water on the side of Earth closest to it, creating a high tide.
* Centrifugal Force: The Earth and moon are also rotating around a common center of mass. This rotation creates a centrifugal force that pulls the water on the side of Earth opposite the moon, also creating a high tide.
* Low Tides: The areas between the high tides experience low tides.
In summary: The gravitational pull of the moon is strongest on the side of Earth facing it, and the centrifugal force is strongest on the opposite side. These forces cause high tides. Low tides occur in the regions in between.