A bare roof of a warmly heated home on a snowy day indicates
A. good insulation.
B. an unwanted flow of heat.
C. regions of convection.
D. all of the above
Answer: B
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Why is peridote considered a coarse-grained ultramafic rock?
A) It contains a lot of silica. B) It contains a lot of feldspar. C) It contains a medium amount of silica. D) It contains very little silica.
In order to use a radioactive-decay scheme to calculate the age of a mineral all of the following conditions must be met except
A) the half-life must be known. B) no daughter isotope present prior to the start of parental decay or the amount of daughter can be determined. C) no parent or daughter isotopes can be gained or lost from the mineral once decay starts. D) only one radioactive isotope can exist in the rock so that cross-decay doesn't occur.
Neap tides occur about the time of the first quarter and third quarter phases of the Moon
Indicate whether the statement is true or false
The clay-rich soil pictured below is a
A. oxisol. B. gelisol. C. spodosol. D. vertisol.