What Is The Definition For Atoll?

: a coral island consisting of a reef surrounding a lagoon .

What is the meaning of an atoll?

: a coral island consisting of a reef surrounding a lagoon .

What is an atoll give an example?

A coral island or series of coral islands forming a ring that nearly or entirely encloses a shallow lagoon. ... The definition of an atoll is a ring shaped coral reef, or close coral islands that enclose or almost enclose a lagoon. The Bikini in the Pacific Ocean is an example of an atoll.

What is the difference between an island and an atoll?

is that atoll is a type of island consisting of a ribbon reef that nearly or entirely surrounds a lagoon and supports, in most cases, one to many islets on the reef platform atolls have a unique geology, so not all islands with a reef and a lagoon are atolls while island is a contiguous area of land, smaller than a ...

What is another word for atoll?

Are atolls floating?

The first and most important fact, discovered by none other than Charles Darwin, is that coral atolls essentially “float” on the surface of the sea . Atolls exist in a delicate balance between new sand and coral rubble being added from the reef, and sand and rubble being eroded by wind and wave back into the sea.

Where can atolls be found?

An atoll is a ring-shaped island formed of coral that surrounds a lagoon. As reef building corals thrive only in warm waters, atolls are only found in the tropics and subtropics .

What is the biggest atoll in the world?

What are the two main types of islands?

There are two main types of islands in the sea: continental and oceanic .

How do you use atoll in a sentence?

1. The Aldabra Islands constitute an atoll consisting of an oval ring of land, some 40 m. ...
2. It is impossible to estimate the total number of the islands; an atoll , for instance, which may slate in the Marquesas, which afford a type of the extinct volcanic islands, as does Tahiti.

What causes an atoll?

Atolls develop with underwater volcanoes , called seamounts. First, the volcano erupts, piling up lava on the seafloor. As the volcano continues to erupt, the seamount’s elevation grows higher, eventually breaking the surface of the water. The top of the volcano becomes an oceanic island.

How deep is an atoll?

atoll, coral reef enclosing a lagoon. Atolls consist of ribbons of reef that may not always be circular but whose broad configuration is a closed shape up to dozens of kilometres across, enclosing a lagoon that may be approximately 50 metres (160 feet) deep or more.

How do atolls affect humans?

Human use of atolls has been shown to impact coral population dynamics by pollution, eutrophication and increased turbidity/sedimentation, disadvantaging coral growth and survivorship and also reducing recruitment (table 1).

How do you pronounce atoll reef?

1. Phonetic spelling of atoll. a-toll. atol-l.
2. Meanings for atoll. A ring-shaped coral reef or island that surrounds water of the body.
3. Synonyms for atoll. coral island. atolls. ...
4. Examples of in a sentence. The atoll, which is pear-shaped and disposed in the direction from S.W. ...
5. Translations of atoll. Japanese : 環礁

What is a synonym for Archipelago?

• peninsula.
• reef.
• bar.
• haven.
• key.
• retreat.
• sanctuary.
• shelter.

What is a synonym for Cay?

Synonyms & Near Synonyms for cay. atoll , barrier reef, coral reef, key.