Nature of Great Rivers

Nature of Great Rivers


Use the resources found on the Great Rivers 1 student esheet to answer the questions on this sheet.

Why Don’t Rivers Run Dry?
What parts of the hydrologic cycle put water into the river?



What parts take water out of the river?



Can people increase or decrease any parts of the cycle? If so, how?



Is there anything in your neighborhood that changes the water cycle?



Why Do Rivers Carry Stuff?
Why do you think river water might look muddy or murky?



Does the muddy water in a river mean that it is polluted?



What keeps particles in suspension longer, faster flowing water or slower flowing water?



How Do Rivers Make Their Beds?
Where does the stuff that rivers carry come from?



What kinds of landscapes produce the most eroded materials?



What happens when river water slows down?



Which particles settle out first?



What is the river bed?



How do rivers make their beds?



What is the energy source for all of this work?



What kind of river bed would you expect in the upland portions of a river, and why?



What is the floodplain?



When the river gets out of its banks, what kinds of materials are likely to be deposited on the floodplain?



How Do Humans Influence River Beds?
How can humans change the normal balance between the natural processes of erosion and deposition?



What happens to the river when humans take these actions?



What is “hungry water” and how does it affect the river?



How do humans change the timing of river flow patterns?



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