http://news.softpedia.com/news/Top-10-Volcanoes-52971.shtml
active volcanoes erupt but not all the time, there are 3 different types of volcanoes active, inactive and extinct.
No. Many volcanoes are dormant or inactive.
Most volcanoes are not active but some are. It is very rare for a volcano to be active. :-)
hawaii
You don't need to worry about preserving volcanoes, new ones come up all the time.
yes one of the most popular volcano on Antarctic is mount Erebus
NO. not at all. most are in the pacific, surrounding the Ring Of Fire
The region of the US with the most active volcanoes is Alaska, particularly along the Aleutian Islands and the Alaska Peninsula. This area is part of the Pacific Ring of Fire and is home to over 80% of all active volcanoes in the US.
With some exceptions, volcanoes are generally not dangerous to people. Your chance of being killed by a volcano is 1 in 80000 over your lifetime, which is far less than your chance of being killed in say a motor vehicle accident (1 in 67). There are also two classifications for inactive volcano's. Volcanoes which have not erupted for a significant amount of time are known as dormant volcanoes. Volcanoes which have not erupted in human history are known as extinct volcanoes. Extinct volcanoes are never expected to erupt again, and are therefore not dangerous unless they have been misclassified. So no, I do not think that all volcanoes whether active or inactive are dangerous. The only dangerous volcanoes are dormant volcanoes that explode suddenly with little or no warning.
under the sea! All over the world of course.
All of it. The islands were created by volcanoes.
Yes. All of the Hawaiian islands are volcanic. Most of the volcanoes, however, are long extinct. Only the volcanoes at the eastern end of the chain still erupt.