Beyond the belts of hills that represent terminal and recessional moraines lie _______________ plains composed of meltwater deposits. These extensive areas of relatively low relief consist of glaciofluvial deposits that are sorted as they are transported by meltwater from the ice sheets
Fill in the blank(s) with correct word
outwash
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All minerals are
A) organic. B) crystals. C) crystalline solids. D) synthetic.
Which is not a factor that leads geologists to expect that convection in the mantle is likely?
A) Viscosity in the lithosphere is high. B) Viscosity beneath the lithosphere is lower because the rock is close to its melting temperature. C) Some of the lithosphere is denser than the asthenosphere. D) The thickness and mass of the mantle are huge.
The blue color of the sky is due to ____
a. selective scattering of visible light by air molecules b. the filtering effect of water vapor in Earth's atmosphere c. reflection of sunlight off Earth's oceans d. transmission of visible light through the ozone layer in Earth's stratosphere e. absorption of short wavelengths by air molecules
Which of the following statements is NOT true regarding groundwater contamination?
A. confined aquifers are highly susceptible to contamination from surface sources. B. it can take thousands of years for an aquifer to flush itself of contaminants. C. once in an aquifer, contaminants spread out over time, forming a plume. D. contaminated groundwater can contaminate streams. E. unconfined aquifers are highly susceptible to contamination from surface sources.