Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
19 Cards in this Set
- Front
- Back
|
Drainage basin |
Is an area of land that is drained by a river and its tributaries Watersheds separate drainage basins. |
|
|
Source |
Where a river begins |
|
|
Mouth |
Where a river ends |
|
|
Watershed |
Boundary of a drainage basin |
|
|
Confluence |
Where other small rivers called tributaries join the main river |
|
|
Tributary |
Small rivers |
|
|
Channel |
Where the water flows through |
|
|
Water cycle |
|
|
|
Erosion |
Is the wearing away of material |
|
|
Attrition |
is a form of coastal or river erosion, when the bed load is eroded by itself and the bed. As rocks are transported downstream along a riverbed, the regular impacts between the grains themselves and between the grains and the bed cause them to be broken up into smaller fragments. |
|
|
Courses |
|
|
|
Abrasion |
Bits of rock and sand in waves grind down cliff surfaces like sandpaper. Attrition. Waves smash rocks and pebbles on the shore into each other, and they break and become smoother. |
|
|
Hydraulic action |
is erosion that occurs when the motion of water against a rock surface produces mechanical weathering. Most generally, it is the ability of moving water (flowing or waves) to dislodge and transport rock particles. |
|
|
Solution |
the process of rock formations, such as limestone, being dissolved in a river setting. The chemical process that occurs is one in which carbon dioxide in the presence of water forms carbonic acid that dissolves limestone. |
|
|
Load |
Material carried by the river |
|
|
Transportation |
The movement of the load along a river |
|
|
Traction |
Large boulders roll along the river bed |
|
|
Saltation |
Smaller pebbles are bounced along the river bed, picked up and then dropped as the flow of the river changes. |
|
|
Suspension |
The finer sand and silt-sized particles are carried along in the flow, giving the river a brown appearence |
