Identify two physical processes by which gases can absorb infrared radiation. Give examples of each process
What will be an ideal response?
1- One way is by changing the rate at which the molecules rotate. If molecules absorb the photon, the molecule's rotation rate increases. The H2O pure rotation band extends all the way from 12 ?m into the microwave region of the electromagnetic spectrum.
2- A second way in which molecules can absorb or emit IR radiation is by changing the amplitude with which they vibrate. If the frequency at which the molecule vibrates matches the frequency of the wave, the molecules can absorb a photon and begin to vibrate more vigorously. The CO2 15-?m band is one of the fundamental vibration modes of the CO2 molecule.
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The urban renewal schemes of Frenchman Baron Georges Haussmann were designed to enhance
A) efficiency and order. B) history and culture. C) revolutionary ideas and politics. D) traditional neighborhoods and activities.
How would you describe the pattern of mineral resources in the North American Region?
What can occur during the evolution of a hot spot?
A. formation of a fold and thrust belt B. an initial period of subsidence as magmas rise from the mantle C. thickening of the crust beneath a passive margin D. formation of rifts that radiate out from the hot spot E. None of these choices are correct.
Which of the following statements best describes strategic minerals?
A. minerals a country exports in a controlled manner for national security reasons. B. minerals a country considers essential for its national security. C. minerals a country finds necessary, but must be imported. D. minerals used to produce military weapons. E. minerals a country considers essential for its economy.