Stream erosion and deposition are controlled primarily by a river's
A. channel shape
B. discharge
C. velocity
D. channel roughness
E. gradient
Answer: C
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Imagine that you were given a ship equipped with a device that could measure how deep the water is. You are asked to use this ship to find a subduction zone. What would you look for as you sailed around the world's oceans?
A) an oceanic ridge B) a mountain range C) a continental rift D) a deep-ocean trench
The process of releasing silver iodide into the atmosphere to stimulate rainfall is called:
A) cloud seeding. B) rain enhancement. C) precipitation harvesting. D) artificial droplet supplementation.
Scientific research supports the existence of Alfred Wegener's proposed supercontinent, Pangaea, approximately 300 million years ago. Pangaea subsequently broke apart, and the pieces—our modern continents—migrated to the positions they occupy today
Based on your knowledge of the mechanics of tectonic motion, do you think there is a likelihood of another supercontinent forming? If so, where? What will be an ideal response?
A student wanted to use the branched groups, isobutyl, sec-butyl, and tert-butyl when naming alkenes, but was told not to. What is the correct IUPAC name for the compound the student called isobutylethene?
A) 4-methyl-1-pentene B) 3-methyl-1-pentene C) 3,3-dimethyl-1-butene D) none of these