Question

question 2 of 10
sedimentary rock is converted into metamorphic rock with the addition of ______.

a. heat energy
b. kinetic energy
c. potential energy
d. nuclear energy

Explanation:

To determine the correct answer, we analyze the rock cycle. Sedimentary rock transforms into metamorphic rock through metamorphism, which requires heat (and pressure). Heat energy drives the chemical and physical changes in sedimentary rock to form metamorphic rock. Kinetic energy (motion - related), potential energy (stored energy, not related to rock transformation here), and nuclear energy (related to atomic reactions, not rock metamorphism) are not involved in this process. So the correct option is A.

Answer:

A. Heat energy