Since 1980, Arctic sea ice has ____.
A. decreased in volume and surface area
B. decreased in volume but not changed in surface area
C. increased in volume and surface area
D. not changed in volume or surface area
E. not changed in volume, but decreased in surface area
Answer: A
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A negative phase of the Indian Ocean Dipole (IOD) results in warmer than average surface waters at ________ and cooler than average waters at ________.
A) A; C
B) A; D
C) C; A
D) C; B
A ball is thrown vertically into the air. Because of air resistance, its speed when it returns to its starting level compared to its initial speed is
A) less. B) the same. C) more.
Over time, shorelines
A) vary by minor features but maintain the same basic outline. B) tend to retreat landward by erosion. C) tend to increase seaward due to sediment deposition. D) may move seaward or landward.
What is the geologic definition of a stream?
A) A river of water that carries large volumes of water and has many tributaries B) A stagnant body of water with little current and low oxygen content C) A large lake system D) A channelized body of water flowing down gradient