Question

fill in the blank to complete each statement.

1. the metamorphic rock ______________ usually forms when limestone is subjected to heat and pressure deep beneath the surface.
2. because the foliated metamorphic rock ______________ splits easily into flat pieces, it is used for roofing material.
3. any rock formed when another rock is changed by heat or ______________ is a metamorphic rock.
4. geologists classify metamorphic rocks according to the ______________ of the grains making up the rocks.
5. quartzite forms when the quartz particles in ______________ recrystallize.

Explanation:

Question 6

Metamorphic rocks form from existing rocks under heat and pressure. Limestone (a sedimentary rock) transforms into marble under such conditions deep underground.

Foliated metamorphic rocks have a layered or banded appearance. Slate is a foliated metamorphic rock that splits easily into flat sheets, making it suitable for roofing.

Metamorphic rocks are formed when existing rocks (igneous, sedimentary, or other metamorphic) undergo changes due to heat, pressure, or chemically active fluids. The key agent here (along with heat) for metamorphism is pressure.

Answer:

marble

Question 7