The once deep-seated roots of former Precambrian mountain belts are the ________ rock for the now stable, central part of the continent.
A. platform
B. core
C. basement
D. cratonic
E. isostatic
Answer: C
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Which of the following elements has two valence electrons?
A. Ne B. Mg C. H D. Li E. Na
An extensive accumulation of mostly detrital sedimentary rocks eroded from and deposited
adjacent to an area of uplift:a. mobile belt d. clastic wedge b. epeiric sea e. alluvial fan c. subduction zone
The hydrologic cycle doesn't include water
A) at the surface of Earth and in the oceans. B) in the atmosphere. C) at a depth of up to several kilometers below the surface. D) from the liquid outer core.
What is an analemma used for?
a. plotting the movement of Earth around the Sun b. determining the amount of incoming solar radiation c. estimating the circumference of Earth d. showing the declination of the Sun throughout the year e. estimating the curvature of the Earth