Wide, flat area where river can overflow its channel during heavy rains
What is Floodplain
100
The organisms that live at the bottom of a deep lake often eat:
What is dead organisms that drift down from above
100
what percent of the earth is freshwater
What is 3
100
Which stage of the river has the most erosion?
the youthful becasue it is the fastest flowing
100
the buildup of sediment deposited alongside the channel of a river to control flodding
What is a levee
200
Loopy curve in a river
What is Meander
200
What would be different about the number of organisms at the bottom of a lake compared to the number of organisms at the bottom of a pond
There would be more organisms at the bottom of a pond
200
Where is most of the freshwater on Earth contained
in ice
200
What happens to the sediments as the river slows down?
Deposition
200
the land area that drains into a river system
What is watershed
300
Source or beginning of a river
What is headwaters
300
What adaptations do plants and animals need that life in the youthful river? (list 2)
hooks, suction cups, narrow bodies and strong roots
300
How many oceans are there
5
300
Rainwater that flows over the land into lakes rivers and streams is called:
surface run-off
300
this part of the river has wide flat floodplains
What is old river
400
smaller streams or rivers that feed into a larger river.
What is tributary
400
What is eutrophication?
An increase in nutrients such as fertilizers and deterbgents whihc runoff into a pond or lake causing an increased growth of algae and plants.
400
Name all 5 oceans
arctic, pacific, atlantic, indian, southern
400
Which part of the meander has the most erosion? Why?
the outside curve becasue it is where the water is moving the fastest
400
as a river ages what happens to the land around it
it becomes less steep
500
Area at the end of a river where it emties into a larger body of water
What is Mouth
500
what is one effect of eutrophication
the lake or pond eventually turns into a meadow
500
Describe the process which an oxbow lake is created
meander continues to erodes outward until it cuts a new path. depostion occurs on the inside of the curve which results in the meander being completely cut off forming an oxbow lake
500
How are a watershed and divide related?
divides cause water to flow seperate ways into different watersheds