Asked by caleb
What is the second step in the formation of a volcano?
Expanding gases cause volcanic eruptions.
Moving tectonic plates create openings for magma to rise.
Gases expand in the rising magma.
Lava cools and forms hard rocks.
All Answers 1
Answered by
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"Gases expand in the rising magma."
Explanation: First tectonic plate movement creates openings so magma can rise. As magma ascends, decreasing pressure lets dissolved gases expand (step 2), which then can trigger eruptions; afterward lava cools into rock.
Explanation: First tectonic plate movement creates openings so magma can rise. As magma ascends, decreasing pressure lets dissolved gases expand (step 2), which then can trigger eruptions; afterward lava cools into rock.
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