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Strait

geography Maturity 11-13 Next article →

A strait is a special body of water. It acts as a narrow path between two larger seas or ocean basins.

Strait
Strait

Most straits sit between two different land masses. The water on both sides is usually at the same height. This allows the water to flow in either direction. Some straits have a strong current that flows mostly one way.

Brändö sund 28 april 2011
Brändö sund 28 april 2011

Sand often gathers at the exits of a strait. This creates underwater shapes called subaqueous fans or deltas.

How a strait works is quite interesting. Because the water is at the same level, it can move freely. However, the shape of the land often squeezes the flow. This squeezing can create very strong movements in the water. Some straits are too shallow for big ships to pass. Others are too narrow or have reefs and islands in the way. These features can make a strait hard to use for travel.

People have used straits for a very long time. Many straits are vital shipping routes for the whole world. Because they are so useful, wars have been fought to control them. Humans also build artificial paths called canals to connect oceans. The Suez Canal is a famous example of a man-made path. While rivers and canals also connect water, they are not usually called straits. This is because rivers usually flow in one direction due to height changes.

There are many important facts about these water paths. A strait is the opposite of an isthmus. An isthmus is a thin strip of land that connects two larger lands.

ISS-44 Strait of Gibraltar
ISS-44 Strait of Gibraltar

Some straits can even help us make electricity. We can use tidal stream turbines to catch the power of the tides. The Pentland Firth might make 10 GW of power. The Cook Strait in New Zealand might make 5.6 GW of power. This is very useful because tides are more predictable than wind.

Rules help keep the water safe for everyone. There are special laws for ships passing through international straits. Some straits, like the Strait of Gibraltar, connect the high seas. Other straits, like the Strait of Tiran, use different rules called innocent passage. This means ships can pass through as long as they stay safe. They cannot do things like fish or carry weapons while passing. These rules help keep the oceans calm and organized for all travelers.

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🖼️ Images & Media (3)
File:ISS-44 Strait of Gibraltar.jpg
ISS-44 Strait of Gibraltar.jpg
File:Strait.svg
Strait.svg
File:Brändö sund 28 april 2011.jpg
Brändö sund 28 april 2011.jpg
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