What texture is displayed by the igneous rock in this photograph?
A. breccia
B. vesicles
C. porphyritic
D. glassy
E. None of these.
Answer: A
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Continental crust is very buoyant compared with oceanic crust because continental crust is
A. predominantly composed of basaltic rock that contains many air bubbles from successive lava flows. B. very young and fresh. C. thinner than the oceanic crust, forming a thin upper skin on the oceanic crust below. D. predominantly composed of granitic rocks, whereas oceanic crust is composed of basaltic rocks.
How do we know that earthquakes are the result of movement along faults?
What will be an ideal response?
Air at the equator is much warmer than air at the North and South Poles. Which of the following scenarios is most likely to decrease the difference in temperature between the equator and poles?
A) Earth spinning without a seasonal tilt to its axis B) Earth being completely covered with water C) Earth rotating in the opposite direction D) Earth being completely covered by land
Ideal conditions for a strong radiation inversion are a
a. ?clear, calm, dry, winter night. b. ?clear, calm, moist, summer night. c. ?cloudy, calm, moist, winter night. d. ?cloudy, windy, moist, summer night. e. ?clear, windy, dry, summer night.