Next: Question 5: Plate Motions
Up: ES 10 HW
Previous: Question 3 - 20
In this problem, all you had to do was label the following items on the map I
gave you:
- San Andreas Fault
- Pacific Plate
- Aleutian Trench
- Indo-Australian Plate
- Mid-Atlantic Ridge
There were five items, so five of the points for this problem come from
labeling these items correctly on the map.
The other part of the problem was to tell me what kind of plate boundaries
the plate boundaries I gave you were. Three of the items listed above
are plate boundaries, and here's what kinds they are:
- San Andreas Fault -- Transform Fault (``T'')
- Aleutian Trench -- Subduction Zone, Convergent Boundary (``C'')
- Mid-Atlantic Ridge -- Spreading Center, Divergent Boundary (``D'')
For some reason, many people were confused and thought that they needed to
label what kind of plate boundaries the Pacific and Indo-Australian Plates
are. You didn't have to do that, because they aren't plate boundaries,
they are plates! The Pacific and Indo-Australian have plate
boundaries (all three kinds, in fact), but they are not plate boundaries
themselves.
I've put the names of the various items in the proper places on the world map
below.
Greg Anderson
ganderson@ucsd.edu
Mon Feb 17 15:24:05 PST 1997