1. Is there a certain place the rock cycle starts?

G. no - because each rock can become any other type of rock

H. Yes - you have to start at sedimentary

I. Yes - You have to start at metamorphic

J. Yes - you have to start at igneous

2. How were rocks used in the past?

M. They weren't used

N. They were used to make glass

O. They were used as hammers and other tools

P. They were used to make cars

3. How are rocks used today?

R. It's illegal to use rocks today

S. To help make modern buildings

T. To make cars

U. To make books

4. 75% of Earth's rocks are....

J. Metamorphic

K. Igneous

L. Sedimentary

5. _______________ is found in over 50% of rocks

T. Feldspar

U. Quartz

V. Mineral

W. Rock

6. Solid pieces of Earth's crust made of one or more minerals

G. Mineral

H. Quartz

I. Rock

J. Geode

7. Composed of a single substance. These make up rocks.

D. Feldspar

E. Geode

F. Quartz

G. Minerals

8. Hollow rock with mineral crystal inside.

O. Geode

P. Rock

Q. Mineral

R. Quartz

9. A common crystal found in geodes

C. Marble

D. Granite

E. Quartz

F. Mica