How might you distinguish a sodium-vapor street lamp from a mercury-vapor street lamp?
A) use binoculars to look for printing adjacent to the bulb
B) look at the street lamps through a spectroscope and match their spectral patterns to their respective atomic spectra
C) ask your local utility company to identify these lamps for you
D) The shadows cast from a sodium-vapor street lamp tend to be more diffuse around the edges.
B
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Most useful oil deposits are usually found
A. Saturating porous rocks, like water in a sponge B. In pools on the earth's surface, where geologic pressures have forced them to collect C. Locked in the mineral structure of a rock formation D. In a liquid pool under a layer of impermeable shale E. In small pools directly above the bedrock
The mass extinction at the end of the Mesozoic was of far greater magnitude than the extinction
at the end of the Permian. Indicate whether the statement is true or false.
Which is the correct order of generations in the United States?
A) Baby Boomers, Baby Bust, "greatest generation", Generation X, Generation Y B) Generation X, Generation Y, Baby Bust, Baby Boom, "greatest generation" C) Generation X, Generation Y, Baby Boomers, "greatest generation" D) "greatest generation", Baby Boomers, Generation X, Generation Y E) "greatest generation", Generation X, Generation Y, Baby Boomers
Mid-ocean ridges form where two ocean plates
A. diverge. B. slide past each other. C. collide. D. are destroyed. E. subduct.