ATM 107 The
Oceans
Friday, 11
September 2015
Daily Announcements:
1) Exam #1 is Wednesday, September 30.
2) No class on Monday, Sep. 14,
Rosh Hashanah.
Song #1: “Under
African Skies” by Paul Simon
Song #2: “Ride
Captain Ride” by Blues Image
Text Source Today: 3.5, 3.6*, 3.3^
* not including the sub-section “Terranes”
^ we will now discuss the sub-section “Polar Wandering Curve”
·
Continental
Margins
Notes Template
·
Rates of Motion of Plates PDF DOC
·
Polar Wandering
Curve
·
Current Location
of Magnetic North Pole and Future Movement
Study Guide Material (Stacey’s Guide) :
1)
Explain the
difference between “passive” and “active” continental margins.
2)
Is the “motion of
plates” theory accepted by all geologists?
Why or why not?
3)
What is the
average rate of motion of the plates?
How is the motion measured?
4)
Which has a
faster rate of motion, a mid-oceanic ridge or rise?
5)
What is a “hot
spot?” Where are they typically
found? Give some examples.
6)
What is an
“underwater seamount?” What is a
“guyot?” What is a “platform?”
7)
What is a
“traverse ridge?” Give some examples.
8) What is a “polar wandering curve?” What basic assumption is made?
9) What can be obtained by superimposing various
polar wandering curves?
10)Approx.
where is the current magnetic north pole?
Where will it be in 2050?