What does a continuous string of earthquakes indicate about a volcano?
- Correct Answer: it is heating up
- extinction is close
- it is cooling down
- eruption is close
Explanation: Earthquakes may take place every day near a volcano. But before an eruption, the number and size of earthquakes increases. This is the result of magma pushing upward into the magma chamber. This motion causes stresses on neighboring rock to build up. Eventually the ground shakes. A continuous string of earthquakes may indicate that a volcano is about to erupt. Scientists use seismographs to record the length and strength of each earthquake.
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