The science of geology is divided into two broad areas: ________ geology and ________
geology. Fill in the blank(s) with the appropriate word(s).
physical, historical
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Metals are both good heat conductors and also good electrical conductors because of the
A) similarity between thermal and electrical conductive properties. B) looseness of outer electrons in metal atoms. C) relatively high densities of metals. D) high elasticity of metals. E) ability of metals to transfer energy easily.
The thinnest structural layer within Earth is the:
a. crust. b. inner core. c. outer core. d. lithosphere. e. mantle.
The Great Oxygen Event marks the time, approximately 2.3 billion years ago, when ________.
a. there was a massive volcanic eruption that lead to a very rapid increase in oxygen levels on Earth b. there was significant oxygen in the atmosphere c. there was a cataclysmic weather event that absorbed most of the oxygen in the atmosphere and locked it into iron deposits in the oceans
Which drainage pattern is described as treelike?
A. radial B. dendritic C. trellis D. centripetal E. sinuous