What triggers the small earthquakes that occur around a volcano before an
eruption
A. upward movement of magma
B. pyroclastic flow C. cooling magma inside the crust D. plate movements
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What triggers the small earthquakes that occur around a volcano before an
eruption
A. upward movement of magma
B. pyroclastic flow C. cooling magma inside the crust D. plate movements
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Answer:
A. upward movement of magma
Explanation:
Most earthquakes directly beneath a volcano are caused by the movement of magma. The magma exerts pressure on the rocks until it cracks the rock. Then the magma squirts into the crack and starts building pressure again. Every time the rock cracks it makes a small earthquake.
Answer:
d
Explanation:
i think it is the first that happened when volcano errupt