Compared with a slope in a humid area, a slope in a drier area nearby is more likely to be
A. more jagged, because uplift is more likely to be outpacing erosion.
B. less jagged, because uplift is more likely to be outpacing erosion.
C. more jagged, because erosion is more likely to be outpacing uplift.
D. less jagged, because erosion is more likely to be outpacing uplift.
Answer: A
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What is the main reason why the age of oldest rocks can vary from one part of a continent to another?
A. Large parts of the continent are subducted deep within the mantle. B. Older rocks are commonly remelted over huge regions. C. Older rocks have been uplifted and eroded away. D. Parts of the continent have been added by the accretion of tectonic terranes.
A volcanic neck can form by
A) erosion of the volcano, leaving behind the solidified conduit inside the volcano. B) erosion of overlying rock layers exposing the conduit below the volcano. C) Both of these are correct.
The temperature at which iron-bearing minerals gain their magnetic property is the
____________________. Fill in the blank(s) with the appropriate word(s).
Why are smaller nuclei such as carbon-14 often radioactive? (carbon-12 is the most common and most stable form of carbon.)
A) The attractive force of the nucleons has a limited range. B) The isolated neutron is not stable and will undergo spontaneous transformation into a proton and an electron. C) Hmmm... mysterious are the ways of the force. D) both A and B E) none of the above