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One volcano can form one island normally. If it collapses into a caldera it could form a group of three or four.

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12y ago

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How many volcanic islands are there?

The canary islands are all sitting on the top of an underwater volcano that has been dormant for hundreds of years. I also know that most of the individual islands have there own volcano's and on tenerife it is due to erupt soon as it does every 100 years. So the islands are on the top of a volcano with a volcano on top of most of them.


Is there water around a volcano?

Sometimes. Many volcanoes form islands, but not all do.


What kind of landform can be formed by deposition of sediment from an underwater volcano?

A seamount can be formed by the deposition of sediment from an underwater volcano. Seamounts are underwater mountains that are often extinct volcanoes, formed by the build-up of volcanic material and sediments over time.


When and where underwater volcano took place?

Many places, many times.


What would happen if an underwater volcano kept erupting again and again?

The underwater volcano would eventually emerge from the sea and become an island. For example, each of the islands in the Hawaiian Islands chain were formed from vocanoes, and the Big Island of Hawai'i is STILL erupting. Iceland was created the same way. Many South Pacific islands were originally undersea volcanoes which erupted, formed an island, and the island became ringed with coral reefs.


How many people died from underwater volcano loihi?

Loihi has not killed anyone as it is still thousands of feet underwater.


How many small islands and how many big ones are there in Hawaii?

The Hawaiian Island archipelago includes 137 islands and atolls. Many of these islands are tiny and uninhabited. The eight largest main islands form the State of Hawaii: the island of Hawai'i, Maui, Lana'i, Moloka'i, Kaho'olawe, 'Oahu, Kauai, and Ni'ihau.I haven't counted the small islands; there are probably more than 124. But 8 larger islands is correct.The "Big Island" of Hawai'iMauiKaho'olaweLana'iMoloka'iOahuKaua'iNi'ihauThe most photographed of the smaller islands is probably Molokini, which is a half-rim of an underwater volcano southwest of Maui. If you ever see a mountainous crescent-shaped island surrounded by boats - that's Molokini.


What are the bahama islands made of?

the Bahamas are make of many under water volcano's


How many people died from the loihi volcano?

To date, no deaths have been conclusively linked to the Loihi submarine volcano, which is located off the southern coast of Hawaii. The volcano is deep underwater and not a direct threat to human life.


Where is shield volcano?

shield volcanoes are in many places but the most common are the Hawaiian Islands


Does the kraken exsiced?

No one knows for sure we do know many people have said to have seen and "underwater demon". The "underwater demon" is called in Caribbean islands as «LUSCA».


How many islands incorporate the Hawaiian Islands?

The Hawaiian Islands include eight major islands: Hawaii, Maui, Oahu, Kauai, Molokai, Lanai, Niihau, and Kahoolawe. It also includes many smaller islets, atolls, and underwater seamounts.