What is a sundog and how is it formed?
What will be an ideal response?
Answer: Platelike ice crystals larger than about 30 μm across tend to align themselves horizontally. If the Sun is slightly above the horizon and behind these crystals, bright spots appear 22° to the right and left of the Sun. These sundogs (or perihelia) often appear as whitish spots in the sky, but sometimes they exhibit color differentiation, with redder colors located on the side of the sundog nearest the sun and the blues and violets located on the outer side.
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At Hebgen Lake in 1959 an earthquake larger than magnitude 7 greatly affected ________.
A. Yellowstone National Park B. Denali National Park C. Grand Canyon National Park D. Yosemite National Park E. Olympia National Park
An igneous rock that cools rapidly is likely to have ________ crystals.
A) small
B) medium-sized
C) large
D) pink
There are at least 300 years left of this fossil fuel. ________
Fill in the blank(s) with correct word
Name two plastic deformation mechanisms that can operate at shallow crustal depths.
What will be an ideal response?