Paragraph: (Science-textbook/science-g4-29.txt)
Sent 1: A flood occurs when a river overflows its banks.
Sent 2: This might happen because of heavy rains.
Sent 3: Floodplains In very flat regions, flood water may spread out on the surface of the land.
Sent 4: It then slows down and drops its sediment.
Sent 5: If a river floods often, a floodplain develops.
Sent 6: A floodplain is an area where a thick layer of rich soil is left behind as the floodwater recedes.
Sent 7: Thats why floodplains are usually good places for growing plants.
Sent 8: They are very flat areas and they have very rich soils.
Sent 9: The Nile River valley is a great example of a floodplain.
Sent 10: Each year, the Nile River rises over its banks.
Sent 11: This floodwater carries a lot of sediment.
Sent 12: This sediment has been eroded off areas of land from upstream.
Sent 13: This sediment is dropped as the water slows down after spreading across the land.
Sent 14: What is left behind is a very rich soil.
Sent 15: Thats why crops can be raised in the middle of a sandy desert.
Sent 16: Natural Levees A flooding river often forms natural levees along its banks.
Sent 17: A levee is a raised strip of sediments deposited close to the waters edge.

Question: Where does the sediment in a flooding river come from, and where does it eventually come to rest? (true/0)

Question: What may cause a river to flood and overflow its banks? (true/1)

Question: What is the flood plain area of land good for if it floods often? (true/2)

Question: What might cause a river to overflow its banks? (false/3)

Question: What valley contains a river which rises over its banks each year? (false/4)

Question: What type of region might a floodplain develop into if a river floods often? (true/5)

Question: What makes the floodplains good for growing plants? (true/6)

Question: What is left behind in a flood plain after the water recedes? (true/7)

Question: What two geographic formation can be created from flooding rivers? (false/8)

Question: What forms the raised strip near the edge of a flooding river? (false/9)