Describe three basic flood control strategies
What will be an ideal response?
Artificial levees are built to increase the volume of water a channel can hold, they are higher and steeper than the natural levees that border the channel. Flood control dams store floodwater and then let it out slowly, which lowers the flood crest by spreading it out over a long time span. Channelization is the alteration of a stream channel to speed up the flow velocity to prevent water level from reaching flood height.
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An Earth satellite is in an elliptical orbit. The satellite travels fastest when it is
A) nearest Earth. B) farthest from Earth. C) It travels at a constant speed everywhere in orbit.
Scientists who study climate change are about evenly divided on whether or not the Earth's atmosphere is getting warmer
Indicate whether the statement is true or false.
What created Earth's moon?
a. The expulsion of rocky mantle after a collision with a planetary body b. The initial big bang expansion event c. The formation of a new star d. The collision between two older moons
________ soils in the southeastern U.S. are notable for red, clay-rich B horizons, rich in iron and aluminum
A) Forest B) Rainforest C) Grassland D) Desert E) Wetland