Explain the processes necessary to form a bird's-foot delta such as that on the Mississippi River
What will be an ideal response?
Answer: The stream carries large quantities of sediment downstream and deposits it where the mouth of the stream meets a large lake or the ocean. More sediment is deposited than waves can remove, so the delta grows outward. As the stream extends its channel, the gradient is reduced, resulting in lower velocity and subsequent deposition. When the stream floods, some of the flow is diverted to another, faster moving channel.
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A ___________ is a small, cone-shaped hill usually less than 450 m (1500 ft) formed from material that accumulates from moderately explosive volcanoes.
Fill in the blank(s) with the appropriate word(s).
Cloud condensation nuclei include ________.
A. sea salt B. pollutants C. dimethyl sulfide D. organic compounds E. All of these choices are correct. F. None of these choices is correct.
How do we know that most of the heat leaving Earth's interior is coming from below the crust?
What will be an ideal response?
What continent has a majority of the world's Internally Displaced Persons?
A) Africa B) Asia C) Europe D) North America E) South America