Doubling the frequency of a photon
A. affects its energy.
B. doubles its energy.
C. both of these
D. none of the above
Answer: C
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Everything else being equal, a gradual increase in global CO2 would most likely bring about ____
A) an increase in surface air temperature B) a marked decrease in plant growth C) a decrease in evaporation from Earth's oceans D) no change in global climate
A climate is classified as "dry" if it receives less than 30 centimeters of rain annually, on average
Indicate whether the statement is true or false
Which of the following has the lowest water solubility?
A) butanal B) heptanal C) hexanal D) pentanal
Why are digital images generally used instead of photographs in satellite remote sensing?
a. Digital image data can be beamed back electronically from space. b. Digital images are similar to a mosaic, made up of grid cells that form a picture. c. Digital images can reproduce a wider part of the spectrum than photos can. d. Digital image data can be beamed back electronically from space, and they can reproduce a wider part of the spectrum than photos can.