Explain the D8 method for deriving a flow direction raster.
What will be an ideal response?
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Floodplains usually contain
a. highly productive wetlands b. debris that has been deposited during floods c. high concentrations of agricultural chemical runoff d. pest insect populations e. nutrient poor soil
A scientist at a canyon notices observes a dike cuts across the sedimentary layers. How did it get there?
A) It was there before the layers; the layers built upon above and beneath it over millions of years. B) There was an earthquake ? a layer of igneous rock was thrust into the sedimentary layers.. C) Magma rose from within the earth and intruded the sedimentary layers. D) A piece of a volcano broke off beneath the earth..
Which is most likely true for an atom with one valence electron?
A) It will gain one electron. B) It will gain two electrons. C) It will lose one electron. D) It will lose two electrons.
Judge the following sentence according to the criteria given below: A tidal bulge is not created on the side of Earth facing away from the Moon BECAUSE the provided gravitational force is greater than the required centripetal force
A) The assertion and the reason are both correct, and the reason is valid. B) The assertion and the reason are both correct, but the reason is invalid. C) The assertion is correct, but the reason is incorrect. D) The assertion is incorrect, but the reason is correct. E) Both the assertion and the reason are incorrect.