Cinder cones are composed primarily of
A) ejected fragments of vesicular lava.
B) blocky lava flows and lahar deposits.
C) pahoehoe and/or aa.
D) volcanic ash.
A) ejected fragments of vesicular lava.
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The primary reason that this feature formed is that
A) abrasion occurred on all sides, without plucking.
B) three or more cirques merged by headward erosion.
C) precipitation at the top of the mountain ran downward very quickly.
D) a series of faults surrounded a very localized area and uplifted it.
The seafloor spreading hypothesis indicates what as the primary cause of continental movement?
a. volcanism in the ocean crust b. convergence of tectonic plates c. the formation and destruction of ocean basins d. the convection of mantle heat e. the decay of radioactive isotopes
Which of the following would not result in the modification of the air mass?
A) A cA air mass moving across the Gulf of Alaska. B) A cP air mass remaining stationary over central Canada. C) A cP air mass moving across the Great Lakes. D) A cT air mass moving across the Gulf of Mexico. E) A mT air mass moving across Texas.
a snake's cylindrical body shape is ____________________ to an earthworm's cylindrical body shape
Fill in the blank(s) with the appropriate word(s).