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The Hawaiian volcanoes are good examples of volcanoes.?
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How volcanic islands formed?
By volcanoes under the sea that get bigger and bigger - and become islands..
Why do volcanoes under water eventually become islands?
When a volcano erupts, it releases hot melted rock called magma, which then solidifies into solid rock. When enough of this rock has been released underwater, the result is an island.
How do tsunamis become more frequent?
Tsunamis can become more frequent due to increased seismic activity, particularly in tectonically active regions where earthquakes are common. Factors such as volcanic eruptions, underwater landslides, and the effects of climate change, which can influence ocean dynamics, may also contribute to the occurrence of tsunamis. Additionally, human activities, like mining or drilling under the seabed, could potentially trigger underwater disturbances leading to more frequent tsunamis. However, the overall frequency of tsunamis is primarily linked to the natural geological processes of the Earth.
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.
What are the effects of faulting?
Depends on what kind of boundary it is. In convergent boundaries, trenches and volcanoes can form where oceanic crust hits continental crust. Mountains form when two continental plates collide. In transform boundaries, earthquakes occur as the plates slide past each other and release tension. Earthquakes underwater can cause tsunamis. In divergent boundaries, faults can become more noticeable. Rifts are formed. Magma can rise from them and fill gaps, creating volcanic islands if underwater. Mid-ocean ridges in these boundaries. Signs of fault movement are all over the place.
What are the effects of fault movement?
Depends on what kind of boundary it is. In convergent boundaries, trenches and volcanoes can form where oceanic crust hits continental crust. Mountains form when two continental plates collide. In transform boundaries, earthquakes occur as the plates slide past each other and release tension. Earthquakes underwater can cause tsunamis. In divergent boundaries, faults can become more noticeable. Rifts are formed. Magma can rise from them and fill gaps, creating volcanic islands if underwater. Mid-ocean ridges in these boundaries. Signs of fault movement are all over the place.
Do islands float on water?
Islands are not floating freely on the surface of the water. They are locations where the solid surface of the earth are elevated above sea level. Imagine a hilly field slowly filling with water. You will reach a point where the tops of some of the hills become isolated from one another with water all around.
Why do some Hawaiian islands have active volcanoes and some don't?
All of the Hawaiian islands are volcanic in origin. The volcanoes are fed by a hot spot, where extra hot material wells up in the mantle, generating magma. This hot spot generally stays in one place while the Pacific Plate above it moves. As this happens, older volcanoes are carried away from the hot spot and lose their source of magma.
How are volcano's made underwater?
At convergent plate boundaries, the plates shift towards each other and collide. This high-degree collision forms underwater volcanoes. When two plates collide, one of the two plates subducts beneath the other, and oceanic trenches are formed.
What do underwater mountains become when the rise out of the water?
Underwater mountains that rise above the surface of the water are called islands. These formations are the result of volcanic activity or tectonic movements that cause them to breach the water's surface.
How is Hawaii a volcano?
AnswerHawaii is a volcanic chain of islands formed over a 'hot spot' in the Earth's mantle. As the Pacific tectonic plate slowly moves over the hot spot, volcanoes rise from the seafloor, forming the islands. A new, future Hawaiian island is rising from the seafloor at this time. As the islands move away from the hot spot, the volcanoes become dormant, resulting in a chain of eroding mountains.
