Geology: A Self-Teaching Guide by Barbara Murck
The Earth Through Time by Harold L. Levin
Vocabulary:
paleomagnetism: magnetism of ancient rocks, showing continents' previous alignment
apparent polar wandering curves: lines on a map showing how a continent moved
Discussion:
How magnetism reveals where the poles are
How paleomagnetism reveals where the poles were relative to the position of the shifting continents
Activity:
Make a compass
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