Which of the following materials probably has the lowest permeability?
A. compacted clay with abundant tiny pore spaces
B. loosely cemented, well-sorted sediment
C. loosely cemented, well-rounded sand grains
D. highly fractured granite
Answer: A
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When it comes to volcanic hazards, the key problem is how easily the dissolved gases can escape from the magma.
Answer the following statement true (T) or false (F)
Radio telescopes have an advantage over optical telescopes in that they can be used during daylight hours
Indicate whether the statement is true or false
What happens as mantle rock rises?
A) It cools and sinks again almost immediately. B) It cools and contracts. C) It expands at decreased pressure. D) It melts and continues to push upward.
When do all locations on Earth experience equal lengths of day and night? Choose all that apply.
A) March Equinox B) June Solstice C) December Solstice D) September Equinox