what is the difference between Island and Atoll?

Answer 1

An island is land surrounded by water.

An atoll is water surrounded by land surrounded by water.

Answer 2

An island or isle is any piece of land that is completely surrounded by water. Very small islands are called islets. Emergent land features on an atolls are sometimes called islets. A key or cay is another name for a relatively small island or islet. An island in a river or lake is called an eyot [ī´ǒt].

There are three main types of islands: continental islands, river islands, and volcanic islands. There are also artificial islands. A grouping of related islands is called an archipelago.

The word island comes from Old English igland. However, the spelling of the word was modified in the 15th century by association with the Old French loanword isle.

and

An atoll is a type of low, coral island found in tropical oceans and consisting of a coral-algal reef usually surrounding an interior body of water called a lagoon or peninsula. Atolls generally mark the locations of subsided (or sunken) extinct volcanic islands; the shape of the atoll is determined by the initial coastline of the original volcanic island, and is maintained so long as coral growth is faster than subsidence, and is not disturbed by other factors. Some atolls contain volcanic remnant islands at their centers. An atoll's low coral-sand islands form as a result of wave action breaking off pieces of coral at the reef escarpment and piling them up behind.

You could get more information from the 2 links below...

Answer 3

ATOLL-

An atoll is a type of low, coral island found in tropical oceans and consisting of a coral-algal reef usually surrounding an interior body of water called a lagoon or peninsula. Atolls generally mark the locations of subsided (or sunken) extinct volcanic islands; the shape of the atoll is determined by the initial coastline of the original volcanic island, and is maintained so long as coral growth is faster than subsidence, and is not disturbed by other factors. Some atolls contain volcanic remnant islands at their centers. An atoll's low coral-sand islands form as a result of wave action breaking off pieces of coral at the reef escarpment and piling them up behind.

The word atoll comes from the Dhivehi (an Indo-Aryan language spoken on the Maldive Islands) word atholhu

Kwajalein in the Marshall Islands, which is sometimes listed as the largest atoll of the world


IISLAND -

An island or isle is any piece of land that is completely surrounded by water. Very small islands are called islets. Emergent land features on an atolls are sometimes called islets. A key or cay is another name for a relatively small island or islet. An island in a river or lake is called an eyot [ī´ǒt].

Answer 4

atoll
http://en.wikipedia.org/wiki/Atoll
An atoll is a type of low, coral island found in tropical oceans and consisting of a coral-algal reef usually surrounding an interior body of water called a lagoon or peninsula. Atolls generally mark the locations of subsided (or sunken) extinct volcanic islands; the shape of the atoll is determined by the initial coastline of the original volcanic island, and is maintained so long as coral growth is faster than subsidence, and is not disturbed by other factors. Some atolls contain volcanic remnant islands at their centers. An atoll's low coral-sand islands form as a result of wave action breaking off pieces of coral at the reef escarpment and piling them up behind.

Island
http://en.wikipedia.org/wiki/Island
An island or isle is any piece of land that is completely surrounded by water. Very small islands are called islets. Emergent land features on an atolls are sometimes called islets. A key or cay is another name for a relatively small island or islet. An island in a river or lake is called an eyot [ī´ǒt].

There are three main types of islands: continental islands, river islands, and volcanic islands. There are also artificial islands. A grouping of related islands is called an archipelago.

Answer 5

Island is an piece of land that is completely surrounded by water (eg Sri Lanka) , An Atoll is coral island. This is found in tropical oceans (eg: Pacific Ocean - Tuamotu Islands, Caroline Islands, Marshall Islands, Coral Sea Islands, and the island groups of Kiribati and Tuvalu, Indian Ocean - the Maldives, the Laccadive Islands, the Chagos Archipelago and the Outer Islands of the Seychelles,

Answer 6

An island stands alone, an atoll is an island inside a surrounding coral reef.
Cuba is an island
Tahiti is an atoll

Answer 7

Atoll:a ring-shaped coral reef or a string of closely spaced small coral islands, enclosing or nearly enclosing a shallow lagoon.

Island:a tract of land completely surrounded by water, and not large enough to be called a continent.