The youngest volcano in Hawaii is Lo?ihi. The summit of this volcano is located approximately ½ mile under the ocean's surface, about 20 miles southeast of the Big Island of Hawai'i.Continue Reading
Lo?ihi only began forming about 400,000 years ago. Several of the other Hawaiian volcanoes, such as Mauna Kea, Kohala and Haleakala, are about 1 million years old. The Ko?olau Range, Wai?anae Range and Ka?ena Ridge, all on O?ahu, are actually the remains of volcanoes that are 2 million to 5 million years old.
The Hawaiian Islands are a chain of islands, also known as an archipelago, located in the Pacific Ocean. There are eight main islands: Hawai?i (the Big Island), Maui, O?ahu, Kaua?i, Moloka?i, Lana?i, Ni?ihau and Kaho?olawe. The Hawaiian Islands are located above a volcanic hotspot, and all of the islands were formed through volcanic activity. As each underwater volcano erupted, the lava cooled and hardened, forming a land mass above sea level over millions of years.Learn more about Volcanoes
When a volcano erupts, it typically affects the humans in the vicinity by covering their environment with ash and sometimes with lava, according to Oregon State University. In addition, some volcanoes produce pyroclastic flows that are deadly to anyone in their path.Full Answer >
A volcano forms when a vent in the Earth's crust allows magma to well up from below. The magma fills a void underneath the surface, and when it builds up enough pressure, it bursts through to the surface. As the magma cools, it hardens into rock, and multiple eruptions may build up the mountainous form of a volcano.Full Answer >
Volcanoes come in different shapes as a result of different types of eruptions and different volcanic materials present in the volcano. The three main volcano shapes are the cinder cone, the shield volcano and the stratovolcano.Full Answer >
A caldera forms as a volcano's magma chamber empties, resulting in a loss of support for the earth above it. These bowl-shaped depressions can range in size from a few hundred meters to several kilometers wide. They are generally caused by large volcanic eruptions.Full Answer >