All of the following are true of ocean currents EXCEPT ________
A) they are driven by gravity
B) they are driven by temperature
C) they are driven by wind
D) they are always rapid and powerful
E) they are driven by density differences
Answer: D
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During each second, the speed of an object in free fall
A. changes by increasing amounts each second. B. remains constant. C. increases by the same amount. D. doubles each second.
Some forms of electromagnetic radiation with short wavelengths are:
a. Visible light and IR radiation b. Visible light and x-rays c. x-rays and IR d. gamma rays and UV radiation e. Visible light and gamma rays
Which of the following accurately describes the typical impact of cloud cover on daily temperatures?
A. Maximum daily temperatures under hazy skies are less than those under clear skies. B. Daily temperatures minima and maxima are not influenced by cloud cover. C. Minimum daily temperatures under hazy skies are less than those under clear skies D. Maximum daily temperatures under hazy skies are greater than those under clear skies.
What is entrainment?
A) warm, moist air fed into a thunderstorm by the updraft B) a line of thunderstorms, one feeding into the next C) the process of cool, dry air being pulled into a thunderstorm by the downdraft D) rotation from the parent cloud transferring into a tornado