An effusive eruption ________, whereas an explosive eruption ________
A) results from magma produced by subducting oceanic plates; originate in the asthenosphere and upper mantle
B) produces composite volcanoes; is an outpouring of low-viscosity magma onto the ground
C) is a violent eruption of magma, gas, and pyroclastics; produces shield volcanoes
D) is an outpouring of low-viscosity magma onto the ground; is a violent eruption of magma, gas, and pyroclastics
E) produces composite volcanoes; produces shield volcanoes
D
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What is the clumping of smaller particles into large masses?
A) accretion B) nuclear fusion C) density stratification D) oxygen revolution
Air is never perfectly clean
Indicate whether the statement is true or false
Compressional tectonic forces may result in the formation of:
a. normal faults. b. anticlines and synclines. c. horsts and grabens. d. strike-slip faults. e. tilted fault blocks.
The computer-based technology called ____ represents a "marriage" between computer cartography and database management
a. spectral analysis b. multi-spectral scanning c. spatial analysis d. geographic information system (GIS) e. conformal projection