Looking at the evidence:
A. Plate Movements:

Go to: http://www2.nature.nps.gov/geology//usgsnps/pltec/pltec2.html
1. How many plates are there?
2. How fast are they moving?


Go to: http://www.enchantedlearning.com/subjects/astronomy/planets/earth/Continents.shtml &
watch the plates move!
Go to: http://cddis.gsfc.nasa.gov/926/slrtecto.html, look at the map of how the plates are currently
moving
3. What can you predict from this map?
4. List 3 impacts for the future of plate movements – Be as specific as possible! (i.e. collisions, climate
changes on continents, new continents, ocean changes, etc.)
B. Activity At Boundaries:
 Go to: http://www.crystalinks.com/rof.html, look at the activity at the boundaries!
5. What is the activity that is occurring in this diagram?
6. Why is it important to us that there is so much activity here?
C. Seafloor Spreading

Go to: http://www.pbs.org/wgbh/aso/databank/entries/do62se.html, read the paragraphs.
7. Who proposed the idea of seafloor spreading?
8. Who proposed the idea of “continental drift”?

Go to:
http://www.classzone.com/books/earth_science/terc/content/investigations/es0802/es0802page04.cfm
9. Explain in your own words what you are seeing in this diagram.
10. How does this image support his theory of seafloor spreading?

Go to: http://www.pbs.org/wgbh/aso/databank/entries/do63ma.html, read the paragraph.
11. In your words summarize how the magnetic polarities support that the plates are moving.