how do mountain building rifts volcanic eruption , earthquake s occur in upper mantle
Answers
Explanation:
An earthquake is a sudden, rapid shaking of the Earth caused by the release of energy stored in rocks. This energy can be built up and stored for many years and then released in seconds or minutes. Many earthquakes are so small that they can not be felt by humans. Some, on the other hand, have caused great destruction and have killed hundreds of thousands of people.
Volcanoes can form at subduction zones where two plates collide, one being driven down into the mantle and the other riding over the top. This causes the lithospheric plate to melt and being less dense than the rock in the mantle it will rise. This rising magma will produce a volcano.
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Answer:
Explanation: At diverging plate boundaries, earthquakes occur as the plates pull away from each other. Volcanoes also form as magma rises upward from the underlying mantle along the gap between the two plates. We almost never see these volcanoes, because most of them are located on the sea floor.