In the context of constituents of Earth crust, which of the following is NOT the type of Rocks?
Show answer & explanation
Correct answer: D
Explanation
Correct Answer:
Option 4: Caldera
Explanation:
A caldera is not a type of rock; rather, it is a large pit (crater) formed following a volcanic eruption.
The main types of rocks are:
Igneous
Sedimentary
Metamorphic
Therefore, a caldera is a geomorphological structure, not a rock.
Potential Questions for Upcoming Exams:
Question: How are igneous rocks formed?
Answer: From lava
Question: How are sedimentary rocks formed?
Answer: From sediments
Question: How are metamorphic rocks formed?
Answer: From pressure/heat
Question: What is a volcano?
Answer: A lava eruption