GEOLOGY

Detailed explanation-1: -Because the Earth rotates through two tidal “bulges” every lunar day, coastal areas experience two high and two low tides every 24 hours and 50 minutes. High tides occur 12 hours and 25 minutes apart. It takes six hours and 12.5 minutes for the water at the shore to go from high to low, or from low to high.

Detailed explanation-2: -Coastal areas experience two high and two low tides every 24 hours and 50 minutes because the Earth rotates through two tidal “bulges” every lunar day.

Detailed explanation-3: -Semidiurnal tide cycle (upper right). An area has a semidiurnal tidal cycle if it experiences two high and two low tides of approximately equal size every lunar day. Many areas on the eastern coast of North America experience these tidal cycles. Mixed Semidiurnal tide cycle (lower middle).

Detailed explanation-4: -While some places have one high tide and one low tide per day, most coastal locations have two high tides and two low tides a day. These highs and lows typically aren’t equal.

Detailed explanation-5: -Semi-diurnal Tide: The most common type of tidal pattern, Semi-Diurnal Tides take place twice daily. This means that over the course of a day there are two high tides and two low tides. The tides rise and fall to the same level each time. They usually happen when the moon is in line with the equator.