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

Question

Accepted Answer

### Question 1:
# Brief Explanations:
Metamorphic rock formed from limestone under heat and pressure is marble. Limestone (a sedimentary rock) undergoes metamorphism to become marble.
# Answer:
marble

### Question 2:
# Brief Explanations:
Foliated metamorphic rock used for roofing (splits into flat pieces) is slate. Slate has a foliated texture and is known for its ability to split into thin, flat sheets, making it suitable for roofing.
# Answer:
slate

### Question 3:
# Brief Explanations:
Metamorphic rocks form when another rock (protolith) is changed by heat or pressure (or chemically). The key agent here, along with heat, is pressure for metamorphism.
# Answer:
pressure

### Question 4:
# Brief Explanations:
Geologists classify metamorphic rocks by the arrangement (or texture, specifically the arrangement of grains) of the grains. Foliated and non - foliated are based on grain arrangement (like alignment in foliated rocks).
# Answer:
arrangement (or texture, more precisely the arrangement of grains)

### Question 5:
# Brief Explanations:
Quartzite forms when quartz particles in sandstone (a sedimentary rock composed mainly of quartz sand grains) recrystallize under metamorphic conditions. Sandstone is the protolith for quartzite.
# Answer:
sandstone

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