In calm air, a typical cloud droplet falls over 600 times faster than a typical raindrop.?
a. True
b. False
ANSWER: False
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A small thunderstorm cloud with virga falling out of its base and blowing dust at the ground can be a warning of a severe hazard to an airplane. Which of the following statements explains what this warning indicates?
A. It is the first indication of a tornado. B. It is an indication that hail will soon begin to fall. C. It is an indication that the airplane could be struck by lightning. D. It is an indication of an intense downdraft or microburst.
The term "litmus test" is commonly used to mean a totally definitive test. In chemistry litmus is used as an acid-base indicator. Which of the following properly relates the chemical and common usages of the term "litmus test?"
A) Common usage is correct because the litmus test definitively defines a substance as an acid or a base. B) Common usage is correct because litmus dye changes color at pH = 7. C) Common usage is incorrect because litmus dye changes color over a range, most of which is above pH = 7. D) Common usage is incorrect because litmus dye changes color over a range, most of which is below pH = 7.
In a(n) _____ older strata dip at a different angle than that of younger beds.
A) Nonconformity B) Angular Unconformity C) Misformity D) Disconformity
At conditions within Earth's mantle, the increase in mineral density due to increasing pressure is ________ the decrease in mineral density due to increasing pressure
A) greater than B) less than C) equal to D) unrelated to