What is the velocity of a stream with a discharge of 200 cubic meters/s that is 10 meters wide and 2 meters deep?
A. 10 meters/s
B. 20 meters/s
C. 400 meters/s
D. 2000 meters/s
A. 10 meters/s
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You notice preserved ripple marks in the mountains, then later at the beach you see ripple marks forming in the sand. Which of the following best describes how the ripple marks in the mountain formed?
A) deformation B) stratigraphic correlation C) uniformitarianism D) catastrophism
Niagara Falls is the most famous set of falls in North America because they ________
A) are the widest falls in the word B) are the tallest falls in the world C) pass an enormous volume of water over them D) flow "backwards" from what would be expected E) date from almost the beginning of Earth history
Large circular-moving currents of water within an ocean basin are called ________
Fill in the blank(s) with correct word
Which of the following accounts for the fact that reactions between ions in solution are usually very fast?
A) Ionic bonds are weak. B) No covalent bonds need to be broken for reaction to occur. C) Reactions between ions are endothermic. D) Reactions between ions are exothermic.