How fast do plates move relative to one another?
A. kilometers per year
B. centimeters per year
C. meters per year
D. one hundred kilometers per year
Answer: B
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Oceanic crust is created at ________ and destroyed at ________.
A. oceanic-ridges; subduction zones B. trenches; rifts C. subduction zones; transform boundaries D. subduction zones; oceanic ridges E. transform boundaries; subduction zones
Multiple "layers" of spatial information are stored in a(n)
A) GPS. B) API. C) remote sensing. D) GIS. E) map.
What property of carbon allows for the formation of so many different organic molecules?
A. Carbon resides in the exact middle of the periodic table, from left to right, with exactly the same number of reactive elements on either side of it. It can therefore react with the maximum number of elements. B. Carbon atoms are unique in their ability to form strong chemical bonds repeatedly with other carbon atoms, which permits the formation of countless possible structures. C. Carbon forms three different isotopes which allows for the formation of many more molecules than other elements. D. Carbon atoms uniquely contain exactly the same number (six) of protons, neutrons, and electrons in their atomic structure.
What is produced when benzene reacts with chlorine in the presence of an iron catalyst?
A) only chlorobenzene B) chlorobenzene and chlorine atoms C) chlorobenzene and hydrogen chloride D) chlorobenzene and water