Which of the following is NOT an atmospheric gas?
a. Clouds
b. Nitrogen
c. Water Vapor
d. Carbon Dioxide
e. Oxygen
a. Clouds
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Temperature differences between nighttime and daytime on Earth are relatively small due to
A. seasonal fluctuations and Earth's magnetic field. B. polar regions absorbing most solar energy. C. Earth being 70% water. D. Earth's relatively high daily spin rate and shortness of nighttime.
Plants synthesize the sugar dextrose (C6H12O6 ) according to the following chemical reaction by absorbing radiant energy from the Sun (photosynthesis)
6 CO2 + 6 H2O ? C6H12O6 + 6 O2 Should energy be written on the left-hand side or right-hand side of this equation?
Which element is currently used to define the atomic mass unit?
A) hydrogen-1 B) carbon-12 C) oxygen-16 D) none of these
When a large flood first breaches a levee, what are the characteristics of the water crossing the breach?
a. relatively clear, highly eroding b. relatively cloudy, highly eroding c. relatively clear but not prone to strong erosion d. relatively cloudy but not prone to strong erosion e. about the same average sediment load as the flooding stream