1. Which of the following was NOT used in support of the continental drift hypothesis? (1 point)
fossil evidence
paleomagnetism
ancient climate
fit of South America and Africa
2. What was the main reason Wegener鈥檚 continental drift hypothesis was rejected? (1 point)
He was not well liked by other scientists.
He could not provide a mechanism for the movement of the continents.
He could provide only illogical explanations for the movement of the continents.
His evidence was incorrect.
3. Which of the following statements correctly describes the asthenosphere? (1 point)
It is a thin, cold, and rigid layer.
It is the source of Earth鈥檚 heat.
It permits plate motion.
It occurs only near subduction zones.
4. In the plate tectonic theory, a plate can be made up of ____. (1 point)
continental lithosphere only
oceanic lithosphere only
both continental and oceanic lithosphere
both continental and oceanic asthenosphere
19. What is true about all plutons? (1 point)
They form above Earth鈥檚 surface.
They form near Earth鈥檚 surface.
They form below Earth鈥檚 surface.
They cut across other rock layers.
20. A lens-shaped intrusive igneous mass close to Earth鈥檚 surface is called a ____. (1 point)
sill
laccolith
batholith
stock
21. Magma forms when solid rock in the crust and upper mantle ____. (1 point)
melts
vaporizes
crystallizes
cools
22. Magma tends to rise towards Earth鈥檚 surface primarily because ____. (1 point)
water is abundant in magma
rocks become less dense when they melt
silica is abundant in magma
rocks become more dense when they melt
23. The igneous activity in Yellowstone National Park is associated with what tectonic setting? (1 point)
divergent plate boundary
convergent oceanic-oceanic plate boundary
intraplate setting
convergent oceanic-continental plate boundary|||Google it! :P
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