Each night you measure your height just before going to bed. When you arise each morning, you measure your height again and consistently find that you are 1 inch taller than you were the night before but only as tall as you were 24 hours ago! Is what happens to your body in this instance best described as a physical change or a chemical change?
A. physical change because it readily reverses
B. chemical change because it involves changes in your bone structure
C. physical change because water expands as it freezes
D. chemical change because it involves your body
Answer: A
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What is the distinctive form of a language that is associated with different regions?
A) lingua franca B) language group C) dialect D) official language E) language family
In the Northern Hemisphere, the westerlies are created by the Coriolis effect acting on air
A) from the subpolar low flowing south to the subtropical high. B) from the subtropical high flowing north to the subpolar low. C) from the subtropical high flowing south to the subpolar low. D) from the subpolar low flowing north to the subtropical high.
Consider the equation Q = wdv. According to the equation, if Q (discharge) remains constant, but w and d decrease (as when a channel becomes more narrow and shallow), the velocity will
A) increase. B) decrease. C) remain constant.
The total discharge of lightning is made up of several rapid strokes and is known as the:
A) flash. B) strike. C) leader. D) bolt.