According to the Meteorological Service of Canada, which of the following defines a severe thunderstorm?
A. a storm having a tornado
B. a storm having surface wind gusts below 90 km/h
C. a storm having hail less than 2 cm in diameter
D. a storm having misty rain
Answer: A
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Most information about the breakup of Pangaea comes from studies of magnetic anomalies in seafloor rocks
a. True b. False
How do sedimentary rocks reveal ancient environments?
What will be an ideal response?
The global diffusion of popular culture may threaten folk culture by
A) being less responsive to the diversity of local environments. B) threatening local environments through the diffusion of information by technology. C) serving as a catalyst for the advancement of folk culture. D) being more responsive to the diversity of local environments.
What happened when the spreading center that generated the Farallon plate collided with the North American plate?
A) A mantle plume formed. B) A divergent plate boundary was created. C) The spreading center subducted, resulting in the Yellowstone Hot Spot. D) A transform boundary was created.