The main destructive actions of tornadoes include all but which of the following?
A. Winds lift off the roof of a house, allowing exposed walls to be knocked over.
B. A strong high-pressure zone in the center blows buildings apart.
C. Winds rushing up the funnel have a lifting force in the updraft.
D. High-wind speeds blow away buildings and trees.
Answer: B
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Which of the following is an expression of the angle of repose?
A) Talus slope B) Some slopes of sand dunes C) Angle of slopes on cinder (scoria) cones D) All of these are correct.
The most common mechanism of cloud formation is:
A) adding water vapor to the air. B) mixing warm moist air with cold air. C) lowering the air temperature to the dew point by adiabatic cooling of rising air. D) none of the above
In the southeastern United States, the red fire ant is
A) a natural predator that is a dominant species in forest ecosystems. B) an invasive species that has caused a decline in biodiversity. C) used to control invasive insect species that could potentially hurt agricultural crops. D) has increased songbird populations that use it as food.
Nuclear reactions within the sun release electromagnetic radiation.
Answer the following statement true (T) or false (F)