Explain how a secondary rainbow is formed
What will be an ideal response?
Answer: Secondary rainbows require two reflections within the raindrop. A small portion of the light hitting the back of the raindrop is reflected back from the interior of the droplet surface, penetrates the droplet once again, and is refracted a second time as it exits the front side of the droplet at a position somewhat lower than where it entered the droplet.
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You are planning a trip through the Intermontane Region from Boise Idaho to the Grand Canyon in Arizona
You plan to take Interstate 84 southeast, following the Snake River, and then turning south past the Great Salt Lake and then Salt Lake City Utah. Then you figure you will take Interstate 15 south through Utah and Interstate 89 into Arizona, ending at the Grand Canyon. In order, from Boise to the Grand Canyon, what three physiographic provinces will you be traveling through? A) Colorado Plateau, Great Columbia Plain, Basin and Range B) Basin and Range, Great Columbia Plain, Colorado Plateau C) Great Columbia Plain, Basin and Range, Colorado Plateau D) Basin and Range, Colorado Plateau, Great Columbia Plain
Tropical rainforests consist primarily of ____
a. grasses b. broad-leaf evergreen trees c. xerophytic vegetation d. shrubs
The principle of cross-cutting relationships which states that a geologic feature that cuts across another feature must be younger than the feature it cuts is important because ________
A) it showed that igneous rocks were younger than sedimentary rocks B) it provided a way to recognize if rocks had been deformed C) it provided a tool for sorting out the relative timing of various geologic events D) it allowed geologists to correlate rock units over large distances
What is the greenhouse effect? List the greenhouse gases
What will be an ideal response?