Which is the biggest cause of regolith movement?
What will be an ideal response?
Answer: Falls, slides, and flows. The amount of rock and regolith removed by the incision of a valley by persistent flow of water in a narrow stream channel is small compared to the volume of rock and regolith that episodic falls, slides, and flows bring down the steep valley slopes.
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Which of the following help us believe that Earth's mass is distributed spherically and uniformly around Earth's center?
A. Earth's spherical shape and lack of rotational wobble B. Lack of roughness of Earth's surface, Earth's spherical shape, and lack of rotational wobble C. Lack of roughness of Earth's surface D. Earth's spherical shape E. Lack of rotational wobble
In what region of Mars is microscopic life most likely to exist?
A) at the poles, where ice caps may harbor microorganisms B) at the equator, where temperatures are most moderate C) deep within the planet's core D) beneath the planet's surface, where melting water may pool
____________________ provide much weather data, including wind speed and direction, but they are typically launched only over land
Fill in the blank(s) with correct word
The Ogallala Aquifer supplies water to ________ and once held more water than all of the surface water ________.
A. The Rocky Mountain states; in the United States B. Arizona and Las Vegas; in the United States C. The Great Plains states; in the world D. Most of New England; in the United States E. California's Central Valley; in the world