Which of the following processes must occur in a raindrop to produce a rainbow?
A. refraction, reflection, and dispersion of sunlight
B. refraction, reflection, and scattering of sunlight
C. transmission, reflection, and dispersion of sunlight
D. reflection, scattering, and dispersion of sunlight
Answer: A
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What accounts for the offsets that occurs along the mid-ocean ridge lines?
a. Faults b. Abyssal plains c. Subduction zones d. Seamounts e. Abyssal hills
The Younger Dryas period
A) occurred nearly 100,000 years ago. B) lasted only a couple of decades. C) was quite warm in the Northern Hemisphere. D) had nothing to do with oceans. E) was likely caused by melting ice sheets.
Without greenhouse gases, earth's temperature would be
A. 0°C. B. 15°C. C. 68°C. D. -18°C.
The present elevation of the Appalachian Mountains is due mainly to (Choose all that apply.)A) post-orogenic upliftB) breakup of PangaeaC) an orogeny during early Paleozoic timeD) the Wilson cycle
What will be an ideal response?