How do the continents move in plate tectonics without being broken up by the stresses involved? What will be an ideal response?
The continents ride along like passengers on a boat. The boat, in this case, is the underlying upper
mantle or "mantle lid," which forms the deeper portions of the lithospheric plate. It is instructive to
keep in mind where the actual plate boundaries are as in the case of South America, for example. The
eastern edge of this plate lies in the middle of the Atlantic Ocean at a considerable distance from the
South American continent. The plate includes not only the land but also the adjacent ocean basin, and
both of these ride like passengers on top of the mantle lid. Also, movement of the plate over the
underlying asthenosphere occurs by flow rather than by mechanical slippage, thus allowing the plate to
move freely without being broken up. As a rule, the breaking up of continents happens as the result of
plate interactions of various kinds
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A) Two B) Three C) Four D) Five
The oceanic crust is composed mostly of ____
a. granite b. peridotite c. basalt d. rhyolite e. gneiss
The latent heat of vaporization of water is larger than the latent heat of melting.(T/F)
a. true b. false
What landforms in the Great Lakes–Corn Belt region provide evidence of the major impacts of glaciation in this part of North America?
What will be an ideal response?