1. The difference in linear speeds between the Earth and Moon creates a speed difference of around 90km/h that is added to the Earth's rotational speed. 2. Half of this 90km/h speed difference, or 22.5km/h, is enough to cause tides due to the effect over 6 hours. 3. Water speeds up significantly more over continental shelves compared to deep ocean areas, due to being inversely proportional to depth. A speed of 22.5km/h in the deep Pacific could reach 225km/h over continental shelves if not for energy losses from friction.