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Chapter 8: Problem 37

What are different types of tides?

Short Answer

Expert verified
Answer: The three main types of tides are diurnal, semidiurnal, and mixed tides. Diurnal tides involve one high tide and one low tide per lunar day, semidiurnal tides involve two high tides and two low tides per lunar day with minimal height differences between them, and mixed tides involve two high tides and two low tides per lunar day with significant height differences between them. The type of tide experienced along a particular coastline depends on the specific geographic location and the gravitational interactions between the Moon, Sun, and Earth.

Step by step solution

01

Introduce Diurnal Tides

Diurnal tides are a type of tide that experiences only one high tide and one low tide during each lunar day (approximately 24 hours and 50 minutes). These tides occur in certain coastal regions where the Moon's gravitational pull has an especially strong effect. Diurnal tides are characterized by a single, daily fluctuation in sea level.
02

Introduce Semidiurnal Tides

Semidiurnal tides are a type of tide that experiences two high tides and two low tides during each lunar day. The difference in height between the two high tides and the two low tides is usually minimal. Semidiurnal tides are the most common type of tides and can be found along most coastlines around the world.
03

Introduce Mixed Tides

Mixed tides are a type of tide that experiences two high tides and two low tides during each lunar day, like semidiurnal tides, but with a significant difference in height between the two high tides and the two low tides. Mixed tides are typically found along coastlines where the gravitational effects of the Moon and the Sun interact with local geographic features to produce more varied tidal patterns.
04

Recap and Conclusion

In summary, there are three main types of tides: diurnal, semidiurnal, and mixed tides. Diurnal tides involve one high tide and one low tide per lunar day, semidiurnal tides involve two high tides and two low tides per lunar day with minimal height differences between them, and mixed tides involve two high tides and two low tides per lunar day with significant height differences between them. The type of tide experienced along a particular coastline depends on the specific geographic location and the gravitational interactions between the Moon, Sun, and Earth.

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