Question

1. what is it called when rocks underground get so hot they become liquid?

a. metamorphic
b. magma
c. plasma
d. sedimentary

Explanation:

• Option a: Metamorphic refers to rocks that have changed due to heat and pressure, not the liquid state of rocks underground.
• Option b: Magma is the term for molten (liquid) rock found underground. This matches the description in the question.
• Option c: Plasma is a state of matter different from liquid rock, often associated with ionized gases (e.g., in stars or lightning).
• Option d: Sedimentary rocks are formed from sediment accumulation and cementation, not related to liquid rock underground.

Answer:

b. Magma