The occurrence of a sundog tells you that
A) the ice crystals are columnar in shape and are horizontally-oriented as they fall.
B) the ice crystals are platelike in shape and are horizontally-oriented as they fall.
C) the ice crystals are columnar in shape and are tumbling while they fall.
D) the ice crystals are platelike in shape and are tumbling while they fall.
Answer: B
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The Prime Meridian separates
A) great circles from small circles. B) the Northern Hemisphere from the Southern Hemisphere. C) the Eastern Hemisphere from the Western Hemisphere. D) places experiencing one day on the calendar from places experiencing another day on the calendar.
Why might the following nuclear reaction not be very good for energy production in a fission reactor? U ? Th + He + 3 neutrons
A) The material only produces a few neutrons so the chain reaction will not be very efficient. B) The reactants are too small to obtain much energy from the missing mass due to the strong nuclear force. C) The products are not the right size to obtain much energy from missing mass due to strong nuclear force. D) The mass of the byproducts is too high and therefore the energy released will not be large enough. E) Interatomic attraction between the products will impede the separation of the atoms from the unstable nuclei.
Conical marine organisms that lived during the Cambrian and were the earliest builders of reeflike
structures:a. protists d. sponges (porifera) b. cyanobacteria e. archaeocyathids c. brachipods
In addition to sand moving along shore, how is beach sand permanently lost to the beach system?
What will be an ideal response?