GEOLOGY

EARTH SCIENCE

TECTONICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Most volcanoes and earthquakes occur ____
A
along the coast
B
along tectonic plate boundaries
C
in the Arctic
D
in the ocean
Explanation: 

Detailed explanation-1: -The abundance of volcanoes and earthquakes along the Ring of Fire is caused by the amount of movement of tectonic plates in the area. Along much of the Ring of Fire, plates overlap at convergent boundaries called subduction zones. That is, the plate that is underneath is pushed down, or subducted, by the plate above.

Detailed explanation-2: -Answer and Explanation: Most earthquakes and volcanoes happen at plate boundaries because in between plates there is a lot of activity, meaning tectonic plate movement (convection forces that rock deformation and construction of faults and fractures).

Detailed explanation-3: -At a convergent plate boundary, one plate dives or “subducts” beneath the other, resulting in a variety of earthquakes and a line of volcanoes on the overriding plate.

Detailed explanation-4: -The Earth’s crust (the outer layer of the planet) is made up of several pieces called tectonic plates and most earthquakes occur along their edges.

Detailed explanation-5: -Sixty percent of all active volcanoes occur at the boundaries between tectonic plates. Most volcanoes are found along a belt, called the “Ring of Fire” that encircles the Pacific Ocean. Some volcanoes, like those that form the Hawaiian Islands, occur in the interior of plates at areas called “hot spots.”

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