How do the layers in exfoliation domes differ from the layers visible in spheroidally weathered
outcrops? What will be an ideal response?
The layered appearance of exfoliation domes derives from tension cracks produced by relieved stress.
Exfoliation domes are usually made up of rock masses formed deep underground where pressures are
higher. Once the overlying rock mass is eroded away, the load decreases, and the remaining rock mass
is able to expand and crack. Spheroidally weathered outcrops form mainly by chemical weathering.
Where pressures come into play, they are the result of mineralogical changes, such as clay formation
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Explain how a psychrometer works and how it is used to measure humidity values
What will be an ideal response?
Currently there is extensive recycling of which of the following polymers?
A) low-density polyethylene B) polystyrene C) poly(vinyl chloride) D) none of these
Outside of the crust, the layer that scientists know the most about is the mantle. Other than via seismic waves, how else do geologists obtain information about the composition of the mantle?
A) Drill cores B) Volcanoes C) Sonar D) Seismic waves
The cloud form that is best described as sheets or layers that cover much or all of the sky is termed ________
A) alto B) stratus C) cirrus D) cumulus