This home system illustrates the use of
A) ecothermal energy.
B) biomass fuels.
C) geothermal energy.
D) hydroelectric energy.
C
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What is the most common way in which sinkholes form?
A. the roof of a cave collapses B. a rising dome of salt finally reaches the surface C. a small explosion of methane gas from coal beds D. a small explosion of CO2 gas from dissolving limestone
The photoelectric effect supports the
A. particle nature of light. B. wave nature of light. C. both of these for high frequencies. D. none of the above
Which of the following is a principle to interpret relative ages?
a) The youngest rock is on the bottom b) a geologic feature is older than any rock or feature it crosscuts c) a younger rock can include pieces of an older rock d) an older magma can bake or metamorphose younger rocks
How does the geology (dip of rock layers or joints) on a slope affect slope stability? What will be an ideal response?