Go to http://www.nationalgeographic.com/forcesofnature/interactive/index.html?section=v
Select earthquakes as a force and read each page. As you read answer the following:
- How do earthquakes happen?
- How many earthquakes occur every day? Why are the majority of these earthquakes never noticed?
- How many per year world wide?
- How often do severe earthquakes occur that cause widespread destruction?
- When and where did the worst earthquake ever occur?
- How many estimated deaths were recorded?
- Where do earthquakes occur?
- What are major (tectonic) plates?
- What are faults?
- What are intraplate quakes?
- Where and when have intraplate quakes happened?
- Where is the largest quake belt on earth? According to your ESRT, pg. 5, at what type of plate boundary do these “Ring of Fire” earthquakes occur? What other type of tectonic event would be associated with these earthquakes?
- Approximately what percentage of earthquakes happen along the “Ring of Fire”?
- What causes earthquakes?
- Where is the San Andreas fault?
- What type of plate boundary is it?
- How long and how deep is it?
- Describe a Normal fault
- Describe a Reverse fault. Look at your ESRT, pg.5. At what type of plate boundary would you find a Reverse fault?
- Describe a strike-slip fault. Look at your ESRT, pg. 5. What type of plate boundary is associated with strike slip faults?
- What is the hypocenter (also known as the focus) of an earthquake?
- How is the epicenter different?
- What are p-waves also called?
- What are s-waves also called?
- Describe the difference between p waves, s waves and surface waves
- Which waves are the fastest?
- Which waves are the slowest?
- What waves are most destructive?
- What instrument measures earthquake waves?
- What does the Richter scale measure?
- Can earthquakes be prevented?
- What 3 tools may enable scientists to better predict earthquakes in the future?
- What one piece of information enables seismologists to determine the distance to the epicenter?
- How many recording stations does it take to pinpoint an earthquake epicenter?
Trigger the earthquake and then click each triangle as directed.
- The farther from the epicenter what happens to the size of the circle?
- List the details of your quake.
- Trigger each type of earthquake and note the differences.
On what type of ground would you want to build a home?
Many suburban areas are constructed on landfill (loose soil).
Why is this a dangerous practice in areas prone to earthquakes?
When you finish with the Earthquake questions, please go to:
Click on the Virtual Volcano Lab. Work with the Viscosity and Gas Content to create the 5 different types of volcanoes.
1.) What is viscosity?
2.) What determines the viscosity of magma?
3.) What determines the gas content of magma?
4.) What type of volcano results from low viscosity, low gas content magma? Describe the eruption associated with this type of of volcano? Using your ESRT, pg. 5, name one location where you would see this type of volcano?
5.) What type of volcano forms from high viscosity, high gas content magma? Describe the eruption associated with this type of magma? At what type of plate boundary would you find this volcano? Using your ESRT, pg. 5, name one location where you would see this type of volcano?
6.) List and describe at least 3 hazards associated with a Stratovolcano and a Plinian eruption?