1. Tides Tide = daily rise & fall in ocean water level
high and low tides occur twice daily
high tides are caused by the gravitational pull of the moon & sun, causing the ocean water to “bulge” away from the Earth
the moon has a greater impact because it is closer
High tide occurs on the side facing the moon, but it also occurs on the opposite side. This is because the moon is also pulling the Earth away from the water on the other side.

2. Gravitational pull of the moon
Low Tide
Tidal bulge
High Tide
High Tide
Gravitational pull of the moon
Low Tide

3. moon and sun pull together = largest tides
moon and sun pull against each other = weakest tides