A map that identifies the average value of a variable being identified over the preexisting areal unit is a ________ map.

A. dot
B. spatial averaging
C. graduated circle
D. choropleth


Answer: D

Environmental & Atmospheric Sciences

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Depleting nutrients in the soil by the through-flow of water is called ______________

Fill in the blank(s) with correct word

Environmental & Atmospheric Sciences

For the geographer, new mapping tools like remote sensing, GPS, and GIS are best viewed as ________

A) replacements for traditional geographic description B) in the test mode and too expensive for most geographers to use C) adjuncts to field study D) aids in the study of small areas E) too difficult for geographers to use

Environmental & Atmospheric Sciences

A satellite that remains over the same spot over all the time is ________

A) geosynchronous B) photogrammetric C) a "low orbiter" D) a Landsat mission E) an impossibility

Environmental & Atmospheric Sciences

What is true of density, salinity, and temperature?

a. Water masses of the same density will not combine. b. Only one combination of temperature and salinity can yield a given density. c. Many combinations of temperature and salinity can yield the same density. d. Density of water tends to decrease with depth. e. Both temperature and salinity decrease with depth.

Environmental & Atmospheric Sciences