Which of the following minerals is a silicate (a mineral containing a silicon-bearing ion)?

A) hematite
B) feldspar
C) calcite
D) halite


Answer: B

Environmental & Atmospheric Sciences

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Consider light energy that is momentarily absorbed in glass and then reemitted. Relative to the absorbed light, the frequency of the reemitted light is

A) considerably less. B) slightly less. C) the same. D) slightly more. E) considerably more.

Environmental & Atmospheric Sciences

________ is the downslope movement of rock, regolith, or soil under the direct influence of gravity

A) Mass wasting B) Erosion C) Weathering D) Dissolution

Environmental & Atmospheric Sciences

The time it takes one full wave to pass a fixed position is called the ________

A) wave drift B) wave frequency C) wave period D) waveform E) wavelength

Environmental & Atmospheric Sciences

Changes in the Earth's orbital configuration may lead to warming temperatures. These warming temperatures, in turn, may lead to the release of both CO2 and CH4. Increases in these gases may further warm the planet. This is an example of a

A) positive feedback loop. B) negative feedback loop. C) neither a positive or negative feedback loop.

Environmental & Atmospheric Sciences