1. By Brad Cloud

2. Scan the code below to study the layers of the earth. Use the answer document to draw a diagram of the layers. Be sure to label them!

3. Scan this code to find the difference between these two layers.

4. Why do scientists believe that the inner core is solid? Scan these codes to find out.

5. Describe what scientists have learned about how the earth’s continents move. Scan this code to learn about it at this interactive site.

6. How is volcano formation sometimes similar to the way in which mountains are formed?

7. Name the earth’s major plates. Scan this code to see a map.

8. How are metamorphic rocks formed? Scan the code to learn.

9. What is the “Ring of Fire” and why is it so significant? Scan the code to explore these questions.

10. How does plate movement change the way the earth looks?