On the Amazon River, the September and March tidal waves are more than 4m (13ft) high and run upstream. These are known as ________ and attract surfers who can surf on the river.
A. super-moon tide
B. poraroca
C. orinoco
D. manano
Answer: B
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You are hiking in the desert. Just when you think you have run out of water, you see a cool spring. As you sip from the spring you are thinking:
A) "I may die from drinking this salt water." B) "Interesting. . . this spring is where the water table meets the land surface." C) "This spring is a clue that rain has recently fallen here." D) "This spring is a source of point pollution."
The term active volcano means that the volcano is presently in a state of eruption. Indicate whether the statement is true or false
What are the two main ways that minerals are put together in rocks?
A. igneous versus sedimentary B. metamorphic versus sedimentary C. igneous versus metamorphic D. crystalline versus clastic
The Principle of Constant Proportions states that ________
A) ocean salinity varies as a function of season B) ocean salinity varies with geographical location C) the percentage of chloride varies with geographical location D) the percentage of sodium varies with ocean depth E) the relative concentrations of the major ions in seawater does not change