Extremely viscous magma ‘stuck' in a vent of a volcanic cone and solidified forms a(n) ________________
Fill in the blank(s) with correct word
plug dome
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In the aerial imagery (Map T-20b), notice that the dry gorge around the half-circle-shaped hill looks like a ridge surrounding a depression. Why does it appear this way?
The question is based on color Maps T-20a and T-20b (in the back of the Lab Manual) and Figure 32-3, a black-and-white stereogram, showing the entrenched meanders of the Green River near Canyonlands National Park, Utah. A larger portion of this region is shown in color Map T-7 in the back of the Lab Manual. What will be an ideal response?
Which of the following is a common setting for a spring?
A) The water table intersects the surface B) A permeable rock overlies a less permeable one C) Sedimentary rocks overlie crystalline rocks along an unconformity D) All of these are correct. E) None of these are correct.
Middle-latitude anticyclones in the Northern Hemisphere:
A) have cold fronts but not warm fronts. B) are large low-pressure systems. C) travel from east to west. D) rotate clockwise.
Which of the following could be the pH of an acid?
a. 2 b. 7 c. 10 d. 13