Volcanoes and Earthquakes Webquest
In this activity you will see internet sites that have an amazing amount of information about volcanoes and
earthquakes. To complete this assignment you will need to visit the different websites and answer the questions
associated with each website. Begin by finding this website:
http://www.nationalgeographic.com/forcesofnature/interactive/index.html
Now choose the force: Volcano in the upper left corner (its a gray image of a volcano). To find answers to the
following questions follow the numbers in the upper left hand corner (underneath the gray forces of nature
images).
1. What is a volcano?
2. How many active volcanoes are there today? Where are they located?
3. What four benefits come from volcanoes?
4. How was Iceland formed?
5. What is the source of energy for volcanoes?
6. What are cinder cone volcanoes hill’s mostly made of? Are cinder cone eruptions explosive or not?
7. What causes the violent eruption of a composite volcano?
8. Name two famous composite volcanoes.
9. How do shield volcanoes get there shape?
10.
What important traits characterize volcanoes?
11.
What does the magma’s silica determine?
12. Now create at least two types of volcanoes... explain the eruptions of each (draw pictures).
Now click on the case studies in the right hand corner.
13. When did Kilauea’s eruption begin? Is it still going?
Now click on the earthquake force image in the upper left corner.
14. What causes earthquakes to happen?
15. What causes earthquakes that are far from plate boundaries?
16. Where is the San Andreas Fault?
17. What type of fault is it?
18. How long is the San Andreas Fault system?
19. What happens to the two slabs of rock in a normal fault?
20. What type of stress is on a normal fault?
21. What type of stress in on a strike slip fault?
22. What is another name for the hypocenter?
23. Which seismic wave causes the most damage?
24. Seismic waves are measured on what sensitive instrument?
25. What three things do seismographs tell experts?
26. What scale is used to assign the magnitudes of earthquakes?
27. Can earthquakes be prevented?
28. What was the location and magnitude of the “Locate an Earthquake”?
29. Which ground type had the most damage in the “Trigger an Earthquake”?
30. What is the energy created by an earthquake carried on?
31. What type of energy do materials in Earth’s core have?
32. What is the source of energy for earthquakes?
33. Fill in the Venn Diagram using similarities and differences between earthquakes and volcanoes. You should
have at least 3 in each part of the circles.
Earthquakes
Volcanoes
*Extra Credit*
If you would like 10 points extra credit... Choose a different force and list five interesting facts about it. Then
list something cool that you learned about that force. (Write in complete sentences)