What is cross bedding?
What will be an ideal response?
As sand is dropped in front of the migrating dune on the slip face, it forms layers at an angle in the prevailing wind direction. Over time and dune migration, these layers pile up, but their defined inclination remains and is called cross bedding. This sedimentary structure is a unique characteristic that can be used to tell the geologic story from the rock record.
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Zinc, Zn, is more easily oxidized than copper, Cu. Two strips of these metals are placed within separate salt solutions and then connected by a wire. Does an electric current pass through this wire?
A. No, an electric current does not pass through the wire because this would result in a prohibitive buildup of charge. B. Yes, as the zinc is oxidized in the salt solution, its released electrons pass through the wire producing an electric current. C. Yes and No. The passage of an electric current depends on whether the salt solutions are sufficiently concentrated to cause the oxidation of the zinc metal. The answer is yes only if the salt solution concentration is greater than 1M. D. There is insufficient information given to know. The passage of electric current depends on three things: the size of the plates, the concentration of the salt solution, and the gauge of the wire.
A 1000-kg truck traveling at 10 m/s brakes to a stop in 5 s. Its average braking force is
A. 3000 N. B. 1000 N. C. 5000 N. D. 2000 N. E. 4000 N.
Explain how a psychrometer works and how it is used to measure humidity values
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The biggest loss of sea ice between 1979 and 2003 appears to be along the1979
? 2003
?
A. north shore of Russia. B. west shore of Greenland. C. north shore of Alaska. D. east shore of Greenland.