Question

multiple choice question
heat flow through earth’s layers causes convection currents in the mantle. as magma rises up toward the crust it puts a lot of pressure on the crust causing it to break.
what type of geologic event occurs when this happens?
options: subduction, earthquake, volcanic eruption, folded rock layers

Explanation:

To solve this, we analyze each option:

• Subduction: Involves one plate going under another, not related to magma rising to break the crust.
• Earthquake: Caused by sudden movement of tectonic plates, not directly by magma pressure breaking the crust.
• Volcanic eruption: Occurs when magma rises, builds pressure on the crust until it breaks, allowing magma to escape. This matches the description.
• Folded rock layers: Result from pressure causing rock to bend, not from magma breaking the crust.

Answer:

C. volcanic eruption