Atoll

In Glogpedia

by MarkC134
Last updated 6 years ago

Discipline:
Science
Subject:
Earth Sciences
Grade:
4

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Atoll

A ring shaped coral reef, or chain of islands formed of coral

As the island sinks after the volcanic activity has ceased and the crust cools, the reef continues to build upward, eventually ending up as a ring shaped culture.

Atoll

These are the steps of how the atoll is formed.

For nearly 70 years the Johnston Atoll was under the control of the American military.In the mid 1980's the Johnston atoll became a facility for chemical weapons disposal.

The Bikini Atoll's flag looks like USA flag but with some black stars.The Bikini Atoll was once part of a hydrogen bomb testing in 1954.

Tatakoto Atoll is in the Tuamoto group.The main settlemant is Tumukuru and the total population was 255 in 2002.

The USA dropped an atomic test bomb on the Bikini Atoll on July 25, 1946 for practice practice


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