How do Sedimentary rocks change to Metamorphic?

Answer 1

Sedimentary rocks change to metamorphic the same way any other rock would: through heat and pressure.

Answer 2

Sedimentary rocks change to metamorphic rocks through the process of metamorphism, where heat and pressure alter the original sedimentary rock's mineralogy, texture, and structure. This process generally occurs deep within the Earth's crust where rocks are subjected to high temperatures and pressures, causing the recrystallization of minerals and the development of new textures.