If you leap straight up inside a high-speed train that slows down, you land
A. slightly ahead of your original position.
B. at your original position.
C. slightly behind your original position.
D. none of the above
Answer: A
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Which type of waves are called “body waves” because they move through the interior of Earth?
a. ?P waves only b. ?S waves only c. ?surface waves only d. ?S waves and surface waves e. ?S and P waves
The Milankovitch cycles cannot entirely explain recent global warming trends because:
A) no data have been found to support their influence on Earth's climate. B) they operate on a very long time scale and cannot address shorter term cycles. C) they were disproved in the 1980s. D) they address cycles in precipitation only.
The following is a quote from a logger operating near Mt. St. Helens before the eruption: "We're logging 10 miles away from the peak. . . . I don't see any hazard. I just came back from Hawaii, where they run tourist buses right up to the edge of a venting volcano." How might you respond to this person to make them understand the differences between Hawaiian volcanoes and Mt. St. Helens?
A. Explain the differences between extinct (Hawaii) and active (Mt. St. Helens) volcanoes. B. Explain the differences between mafic (Hawaii) and siliceous (Mt. St. Helens) magmas. C. Explain the differences between oceanic (Hawaii) and continental (Mt. St. Helens) volcanism.
An abundance of foraminifera shells would be described as what type of sediment?
a. turbidic sediment b. calcareous ooze c. siliceous ooze d. evaporitic sediment e. diatomaceous earth