Download Lab 2 work sheet

Lab 2 work sheet
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Answer questions 2, 3, 4, 5 and 7 in lab 2.
2. What kind of faulting and plate boundary would you expect to occur if:
a. Earth is expanding in size?
b. Earth is shrinking in size?
c. Earth’s outer shell is fractured but there is no expansion or shrinking in
size?
3a. What percentage of Earth’s plate boundaries are transform boundaries?
3b. What percentage of Earth’s plate boundaries are divergent boundaries?
3c. What percentage of Earth’s plate boundaries are convergent boundaries?
4.
Based on your work in 3 is the Earth shrinking, expanding or staying about the
same? Cite your reasoning and evidence.
5. Ahh! The lava lamp observation! If you do not have access to a lava lamp you
can view a video clip of one on my website at
http://www.itc.csmd.edu/bio/truss/index.htm#Courses%20I%20am%20teaching
Just scroll down to the bottom of “Favorite Links”.
a. Describe (or sketch and label) the motions of the lava-like wax that occur over a
full minute.
b. What causes the “lava” to move from the base of the lamp to the top?
c. What causes the lava to move from the top to the bottom of the lamp?
d. What is the name applied to this kind of cycle?
7.Compare the plates and boundaries in Figure 2.6 to the red and blue regions in
Figure 2.7.
a. Under what kind of plate tectonic feature do the warm, less dense rocks occur most
often?
b. Under what kind of plate tectonic feature do the cool, more dense rocks occur
most often?