The New Madrid earthquakes are apparently related to an old buried ________.
A. rift zone
B. transform fault
C. oil pipeline
D. subduction zone
E. hazardous waste dump
Answer: A
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The hypothesis of continental drift was not widely accepted because
A) the hypothesis required that the entire Earth was once frozen. B) the hypothesis required long, narrow land bridges that did not exist. C) there was no mechanism to move continents through the oceanic crust. D) All of these were reasons the hypothesis was not widely accepted.
What may result from crystallization?
A) Sedimentary rock becomes metamorphic rock. B) Sediment becomes sedimentary rock. C) Magma becomes igneous rock. D) Metamorphic rock becomes magma.
What is the leading threat to commercial shellfisheries?
a. oil spills b. PCBs c. hypoxia d. mercury e. plastics
A common Doppler radar signature associated with a supercell tornado is the
A) gust front. B) hook echo. C) shelf cloud. D) roll cloud.