Question

select the correct answer.
which transformation requires a complete meltdown of the rock into magma?
a. igneous rock to sedimentary rock
b. sedimentary rock to metamorphic rock
c. metamorphic rock to sedimentary rock
d. sedimentary rock to igneous rock
e. igneous rock to metamorphic rock

Explanation:

To determine the correct answer, we analyze the rock cycle:

• Igneous to sedimentary: Weathering, erosion, deposition (no melting).
• Sedimentary to metamorphic: Heat and pressure (no melting).
• Metamorphic to sedimentary: Weathering, erosion, deposition (no melting).
• Sedimentary to igneous: Sedimentary rock melts into magma, then cools to form igneous rock (requires melting).
• Igneous to metamorphic: Heat and pressure (no melting).

Answer:

D. sedimentary rock to igneous rock