EARTH SCIENCE
VOLCANOES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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One tectonic plate sliding under another
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A plate flowing over a hot spot
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One plate moving northward, and one plate moving southwesterly
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A meteorite hit the earth
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Detailed explanation-1: -Mount Hood, and the rest of the Cascade volcanoes overly the Cascadia subduction zone – a region where two of the Earth’s tectonic plates are colliding. The plate to the west – the Juan de Fuca plate of oceanic crust – is being pushed under the North American continental plate in a process known as subduction.
Detailed explanation-2: -The Cascades formed through the subduction of the denser Juan de Fuca tectonic plate beneath the North American plate. Subduction is the process where an oceanic tectonic plate slides underneath another, continental plate.
Detailed explanation-3: -Mount Hood is the fourth-highest peak in the Cascades, and the tallest in Oregon at 11, 249 feet. The glacial Cascade Mountains are globally recognized for their beauty as well as for the recreational opportunities their peaks, valleys, rivers, and lakes afford.
Detailed explanation-4: -The Cascade Arc includes nearly 20 major volcanoes, among a total of over 4, 000 separate volcanic vents including numerous stratovolcanoes, shield volcanoes, lava domes, and cinder cones, along with a few isolated examples of rarer volcanic forms such as tuyas.