What does cataract mean in geography?

What does cataract mean in geography?

waterfall
Cataract, a waterfall (q.v.), especially one containing great volumes of water rushing over a precipice.

What does cataract mean in science?

a junction of electric conductors, usually metal, that controls current flow, often completing or interrupting a circuit. Geology.

Why are waterfalls called cataracts?

It’s a derivative of katarassein, from kata– “down” plus arassein “strike, smash”. It was soon after applied to a large waterfall, strictly one in which the water plummets over a precipice; this came from a Latin use of the word to describe the Cataracts of the Nile.

What is an example of a cataract in geography?

A large waterfall; steep rapids in a river. The definition of a cataract is a flood, waterfall or rush of water, or an eye disease when the lens becomes opaque, causing partial or total blindness. An example of a cataract is Niagara Falls.

What are cataracts in a river?

Cataracts are waterfalls on very large rivers. They do not have to be high, but they carry enormous volumes of water. The word cataract is not used for most waterfalls. It is used for waterfalls along the River Nile in Egypt, which are little more than steps, but there are steps in other places, too.

What is cataract in simple words?

A cataract is a dense, cloudy area that forms in the lens of the eye. A cataract begins when proteins in the eye form clumps that prevent the lens from sending clear images to the retina. The retina works by converting the light that comes through the lens into signals.

What does contacting mean?

If you contact someone, you telephone them, write to them, or go to see them in order to tell or ask them something. Contact the Women’s Alliance for further details. Synonyms: get or be in touch with, call, reach, approach More Synonyms of contact.

What’s the difference between a waterfall and a cataract?

A waterfall is an area where water flows over a vertical drop or a series of steep drops in the course of a stream or river. Waterfalls also occur where meltwater drops over the edge of a tabular iceberg or ice shelf. A cataract is a cloudy area in the lens of the eye that leads to a decrease in vision.

What is the difference between Cascade and cataract?

Cataract: A large, powerful waterfall. Cascade: Water descends a series of rock steps. Segmented: Distinctly separate flows of water form as it descends. Tiered: Water drops in a series of distinct steps or falls.

What are cataracts in rivers?

What is rapid and cataract in geography?

As nouns the difference between rapid and cataract is that rapid is (often|in the plural) a rough section of a river or stream which is difficult to navigate due to the swift and turbulent motion of the water while cataract is (obsolete) a waterspout.

What do cataracts look like?

A cataract is a cloudy area in the lens of the eye. It can look like a speckle, crystal or stripe. If the cataract is large or dense enough, it can cause blurry vision or block vision. Most cataracts are partial (not involving the whole lens), but they can sometimes be complete (involving the whole lens). A cataract may be in one eye or both eyes.

What is a cataract in a river?

The cataracts are sections where the river tumbles over rocks and have long kept boats from going up and down the river from Equatorial Africa to Egypt.

What is cataract water?

Cataract(noun) a great fall of water over a precipice; a large waterfall. Cataract(noun) an opacity of the crystalline lens, or of its capsule, which prevents the passage of the rays of light and impairs or destroys the sight.

What are cataracts River?

Cataract River ( Tenterfield ) Cataract River, a mostly perennial stream of the Clarence River catchment, is located in the Northern Tablelands district of New South Wales, Australia.