EARTH SCIENCE
VOLCANOES
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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true
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false
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Either A or B
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None of the above
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Detailed explanation-1: -Islands can be created by volcanic eruptions. True. When a volcano erupts under water, the lava cools to form a layer of solid rock. Over time, these layers build on top of each other until the volcano peaks above sea level, forming a volcanic island.
Detailed explanation-2: -Constructive Force: A volcano is an opening in the Earth’s surface or crust, which allows hot, molten rock, ash and gases to escape from deep below the crust of Earth’s surface. Volcanic activity form mountains and land over time.
Detailed explanation-3: -As volcanoes erupt, they build up layers of lava that may eventually break the water’s surface. When the tops of the volcanoes appear above the water, an island is formed. While the volcano is still beneath the ocean surface, it is called a seamount. Oceanic islands can form from different types of volcanoes.
Detailed explanation-4: -Answer and Explanation: Geologists and volcanologists, a type of geologist specializing in volcanoes, conclude that volcanoes are constructive forces because they often create new landforms and build on existing ones.
Detailed explanation-5: -Volcanic islands are formed by volcanic activity on the seabed, often near the boundaries of the tectonic plates that form Earth’s crust. Where two plates pull apart, lava erupts to form an undersea ridge. Layers of lava build up until a ridge breaks the sea’s surface to form an island.