Flashcards in Chapter 8 Deck (36):
Is the line dividing a river from another.
Are smaller rivers on the normal one.
Is where the tributaries meet the river.
Is the mouth of the river.
Is land the forms the river mouths.
Is where the river meets the river or sea.
Is where the river begins
Is the path of the river from source to mouth.
Is the area drained by its river and tributaries.
Are the smaller rivers that break off from the main river as it enters the sea.
Processes of river transportation
Are hydraulic action, abrasion, attrition and solution, solution, saltation, suspension and traction.
Is the the erosion by the force of moving water
Is when the river uses its load to erode the bed and banks.
Is when the load bang against each other and the rocks are smoothed
Is when some rocks dissolve
Is when rock minerals dissolve and are carried away
Is when small stones bounce off the bottom of the river
Is when light material is carried along.
Is when larger materials are rolled along the river bed
The old age stage
Is when the river slows down and it deposits its load. Some features are ox-bow lakes, levees and deltas
The neck of the meander narrows, eventually breaks off into a straight line and an ox-bow lake is formed by the deposition cutting it off
Is when a river floods and all the water and deposits flow up onto the floodplain and the deposits stay there and eventually build up.
Is when the river slows down and deposits its load which forms a delta. An example is the Mississippi River in USA, the Nile in Egypt.
Are the watershed, tributaries, confluence, estuary, delta, mouth, source, course, basin and distributaries
Rivers and people
Rivers can flood due to heavy rainfall or how people manage the rivers. People can drown, farmland and houses are flooded, food prices increase because of the decreasing crops.
A dam is a barrier build to hold back water. They can act to generate energy or to store water.
Advantages of dams
They produce pollution-free energy. Water is stored. They are used to prevent too much water flowing into the middle and lower course.
Disadvantages of dams
Good farmland is flooded when dams are being created. Many people have to move house. There is danger in case it floods or overflows.
The youthful stage
This is where the most erosion occurs. It forms V-shaped valleys and waterfalls.
Occur when the river erodes the valley and flows down as a result of gravity. It continues and gradually looks V-shaped.
Occur when the river erodes soft rock if front of hard rock. It undercuts the hard rock which eventually breaks off and that makes a waterfall.
The slope is flatter than the youthful stage. It doesn't flow down as fast. It forms flood plains and meanders.
Is made when a river floods and lays down alluvium on the valley floor.
Are made when a river erodes its outer bend and deposits on its inner bend.
The wearing away of rock, it's transportation and its deposition