2006-09-26 04:12:45 · 6 answers · asked by crownvic64 4 in Environment
The volcanic activity causes it. When a volcano erupts, the lava flows to the ocean where it cools. Cooling causes it to harden, therefore you have more solid earth.
2006-09-26 04:22:33 · answer #1 · answered by francesfarmer 3 · 0⤊ 0⤋
Volcanic activity. The Hawaiian islands were formed and are still being formed by volcanic eruptions. The underwater eruptions of lava, that hardens into the landmass we know as Hawaii are continuous, thus continually adding to the square mileage of the islands.
Unfortunately, the life-cycle of volcanic islands is short when compared to continental land masses. Volcanic islands eventually sink back into the sea forming atolls in the process. The volcano's dome sinks back into the sea as coral reefs form on the outside slopes. Note the Hawaiian atolls of Midway and Kure.
http://en.wikipedia.org/wiki/Atoll
2006-09-26 14:59:11 · answer #2 · answered by ? 3 · 1⤊ 0⤋
Hawai'i is growing for the reason that lava from Kilauea Caldera flows into the ocean everyday. It is said that in a few thousand years Hawai'i and Maui will become one island.
2006-09-26 11:24:39 · answer #3 · answered by jasperisgood 1 · 0⤊ 0⤋
The Big Island is growing larger, the other islands are shrinking from erosion.
2006-09-26 11:22:35 · answer #4 · answered by Kainoa 5 · 2⤊ 0⤋
lava flow into the water increases land mass by adding to the edge of the island.
2006-09-26 11:20:53 · answer #5 · answered by korikill 4 · 0⤊ 0⤋
active volcanoes, spewing lava on the ocean's floor
2006-09-26 11:20:30 · answer #6 · answered by who be boo? 5 · 0⤊ 0⤋