Name and describe the three types of major volcanoes (exclude lava domes and continental calderas). Identify their rock composition, shape, and the viscosity and composition of the magma that created them
What will be an ideal response?
ANSWER: A correct answer must include all of the following:
- Shield volcanoes are composed of basalt. They have gently sloping sides and formed from low-viscosity magma.
- Stratovolcanoes are composed of andesite. They have moderate slopes and formed from moderately viscous magma.
- Cinder cones are composed of rhyolite. The have steep slopes and formed from moderate-viscosity magma mixed with volatiles.
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Which of the following map or diagram would best show you the shape of the land surface?
A. geologic map B. shaded-relief map C. stratigraphic section D. satellite image
Convergent plate boundaries are characterized by formation of new oceanic crust
a. True b. False
For many tropical wet and dry (Aw) stations in the Northern Hemisphere, April and May are often warmer than June and July
Indicate whether the statement is true or false
Shearing is a type of
A. lithostatic pressure B. compressive stress C. differential stress D. confining pressure