Answer the following questions. You will receive immediate feedback when you select your answer or when you click on the green check mark (). When you are finished, click the How Did I Do? button to see your score.

1. What causes earthquakes?
   
   

2. What causes tsunamis?
   
   

3. What is a sign that a tsunami is about to occur?
   
   

4. What spews from volcanoes in addition to lava?
   
   

5. Can volcanoes erupt more than once?
   
   

6. Why are so many volcanoes on islands?
   
   

7. What natural disaster is liquefaction associated with?
   
   

8. How much more intense is a magnitude 7.0 earthquake than a magnitude 3.0 earthquake?