Volcanic crater

High school (ages 12+)
Environment & Earth

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/volcanic-crater

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the formation processes?Excavation by explosive eruptions, collapse following magma withdrawal, or lava ponding
2. What is the associated structures?Can evolve into larger collapse features known as calderas
3. How do volcanic craters form?They form when magma rises and erupts, pushing out rock and gas. Explosive eruptions make deep, steep walls, while gentle eruptions make shallow depressions or lava lakes.
4. Why can a crater become a caldera?If a huge eruption empties a big magma chamber, the roof can collapse, creating a much larger depression called a caldera.

Phreatomagmatic Eruption: An eruption caused by the interaction of magma with external water, producing steam explosions.
Tephra: Fragmented volcanic material ejected into the atmosphere during an eruption.
Stratovolcano: A large, conical volcano built up by many layers of hardened lava, tephra, and volcanic ash.