1. Which of the following best describes how scientists classify different rocks?

2. What type of rocks are formed from sediment over a really long time?

3. What type of rocks are rocks that came from outer space?

4. What type of rocks are formed by great heat and pressure?

5. What type of rocks are formed when magma or lava cools and hardens?

6. True or False: Rocks are constantly changing from one type to another, but it can take millions of years.

7. Which of the following is an example of a metamorphic rock?

8. Which of the following is an example of an igneous rock?

9. Which of the following is an example of a sedimentary rock?

10. What are layers of sedimentary rock called?