How does lava differ from magma? What will be an ideal response?
Lava is magma at Earth's surface.
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The main hazard of an eruption that forms a large caldera is
A) burning, building collapse, and suffocation from an eruption column and pyroclastic flows. B) volcanic mudflows and landslides. C) hot fragments thrown a short distance from the volcano. D) destruction by moderately fluid lava flows that can flow far from the volcano.
Evaporites in the rock record commonly indicate a period of arid climate
a. True b. False
The modern U.S. environmental movement began as a
A) partisan effort but now has broad bipartisan support. B) partisan effort that remains partisan and highly contested today. C) broad bipartisan effort that remains in effect today. D) broad bipartisan effort but has fractured into a contentious partisan debate with intense lobbying.
All of the following explain the difference between land and water temperature patterns EXCEPT:
A) land has a higher specific heat than water. B) convective mixing helps distribute heat energy throughout a water body. C) radiation does not penetrate as deeply in land as it does in water. D) evaporative cooling is more common over water than over land.