Tsunami effects are increased by ____
a. ?increasing water depth
b. ?the funneling effect of bays
c. ?changes in water temperature and density
d. ?sandbars near shore
e. ?hot weather
ANSWER: b
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What is one disadvantage of using groundwater?
A. depletes aquifer from overpumping B. produces too much cheap electricity C. rarely clean enough to drink D. more expensive to extract than most surface waters E. cheaper to extract than most surface waters
The mineral fluorite is commonly sold in mineral shops as octahedral (8-sided) objects. This shape originates from ________
A) the growth of fluorite in caves and is the form the crystals grow in the open cavern B) cutting a larger crystal along four perfect cleavage planes, forming a cleavage fragment C) the typical crystal form of fluorite D) a pseudomorph (false form) of fluorite from replacement of a salt, potassium chlorite, that grows in octahedral crystals
What type of charge is carried by the biologically active portion of bile salts?
A) negative B) none C) positive D) It varies from one bile salt to another.
The field of marine science involves ____
A) the building of oil platforms, ships, harbors, and other structures that enable us to use the ocean wisely B) the process of making observations, asking questions, and forming hypotheses C) the scientific study of the ocean, its associated life-forms, and its bordering lands D) testing hypotheses by controlled experiments