Which Hawaiian island is the youngest?
A) Hawaii
B) Kahoolawe
C) Oahu
D) Kauai
Answer: A
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How many times during the last 2.6 million years (the Quaternary Period) has Earth's climate cycled back and forth between glacial and interglacial periods?
A) 11 times B) more than 100 times C) 4 times D) 22 times
Relative to dune movement and form, a dune's slipface forms on which side?
A) leeward side B) windward side C) freedune side D) none of the above—it is not associated with a particular side
In 2005 the United States Congress mandated that NASA find 90 percent of large Near Earth asteroids (NEAs)-those that have the potential to impact Earth-by the year 2020. This mandate was created in response to recent scientific data indicating large impact events were common in Earth's geologic past and therefore will likely occur again in the future. Many new NEAs have been discovered as a result of NASA's efforts and research is under way to find ways to stop such impact events from occurring.The above paragraph suggests that, unlike other natural hazards, asteroid impacts ________.
A. pose little threat to humans B. are intensively studied by scientists C. may some day be prevented D. are not likely to occur in the near future
Glaciers are part of the hydrosphere.
Answer the following statement true (T) or false (F)