Operation of river locks

Operation of river locks

River locks make rivers with great level differences safe for boating.

Ģeogrāfija

Atslēgvārdi

upes atslēga, Vārti, slēdzenes kamera, bloķēšanas sistēma, transports, ūdens transports, Piegāde, ūdenskritums, upe, ūdens līmenis, augstuma starpība, Ģeogrāfija

Saistītie vienumi

Ainas

Saistītie vienumi

Flood defence system

The protective embankment, or, in case of minor floods, the summer dyke ensures the protection against flood damage.

Freshwater pearl mussel

A species of mollusc widespread in freshwaters.

How does it work? – Escalator

This animation demonstrates how an escalator works.

How does it work? - Sonar

This animation demonstrates how sonar works.

Hydroelectric power plant (Hoover Dam, USA)

The huge dam built on the Colorado river in the US was named after a former American President.

Land reclamation in the Netherlands, 17th century

Inhabitants of the northern part of the Netherlands have successfully fought the sea since the Middle Ages.

Rivers and landforms

Rivers play an important role in shaping the Earth's surface: they cause erosion as well as carrying and depositing sediment.

Syrian water wheels (City of Hama, 13th century)

Medieval Syrian water wheels were used to convey water to distant areas.

The Panama Canal

The Panama Canal is an artificial waterway created to shorten shipping routes between the Pacific Ocean and the Atlantic Ocean.

The Zuiderzee Works and the Delta Works (Netherlands)

Remarkable civil engineering works to continue the Netherland's centuries-long fight against the sea.

Tidal power station

Tidal power stations utilise the daily fluctuation of the water level for producing electricity.

Water turbine, generator

Water turbines convert the kinetic energy of water into electric current.

Container ships

Commercial maritime routes of container ships form a global network.

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