1. Fill in the blanks using words from the lesson.
a. Anthracite is a metamorphic type of ________________ .
b. Heat, pressure, and ______________ turn igneous and sedimentary rocks into metamorphic rocks.
c. Fluids in rocks _________________________ up metamorphism.
d. ____________________ rocks recrystallize to form metamorphic rocks.
e. Minerals are just __________________ to recrystallize in low-grade metamorphic rocks.
f. Minerals in metamorphic rocks _____________________when heat and pressure is exerted on rocks.
g. Metamorphic rocks are rocks of ______________________ .
h. Rocks that _______________________ due to heat and pressure become igneous rocks.
i. Heat and pressure usually work to form new _________________________ rocks.
j. Graphite and ______________________ are both made of pure carbon.
