The physical disintegration and chemical decomposition of rock at or near Earth's surface is called
a. weathering.
b. gradation.
c. erosion.
d. none of these.
a
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A balloon fully inflated and sealed at 10 metres/33 feet, would probably __________ during ascent to the surface.
a. shrink (become smaller) b. burst
Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane. A charge of uniform density (5.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m. Determine the magnitude of the electric field for any point with z = 1.0 m
a. 0.45 kN/C b. 0.17 kN/C c. 0.28 kN/C d. 0.73 kN/C e. 0.62 kN/C
Image height divided by object height gives
a. image distance b. object distance c. magnification d. real image size e. virtual image size
Plate tectonics differs from continental drift because it
A) provides a credible driving force. B) did not explain the fit between South America and Africa. C) showed that ancient ice sheets did not exist. D) showed that Pangaea broke up much later than predicted.