Streams
What is a streams load?
materials carried by the stream
Are beaches, sandbars and barrier islands created by erosion or deposition?
deposition
What are mounds of wind-deposited sand called?
sand dunes or dunes
What is a large mass of moving ice that forms from compacting snow?
glacier
What is the movement of rocks down a steep slope?
rockfall
rapid mass movement
What is the relationship between a streams gradient and the speed of the stream?
steep gradient= faster speed
flatter gradient= slower speed
Gentle waves cause (little/a lot) of erosion.
Strong waves can (increase/decrease) the rate of erosion.
little
increase
What is the relationship between the direction of the sand dune and the direction of the dune?
they go in the same direction
What are the materials carried and deposited by a glacier? How are they deposited?
glacial drift
when the glacier melts
The downward shifting of materials is called..
What are the two types of them
mass movement
slow mass movements and rapid mass movements
Which landforms are created by erosion?
floodplains/ deltas/ alluvial fans
or
canyons and valleys
canyons and valleys
Why do people who live on the water put sandbags or rocks to act as a barrier?
To help reduce the rate of erosion. Water slams into that not the land.
Why is Loess a valuable resource?
forms good soil for growing crops
very valuable for farmers
What are at least three things that would happen when glaciers melt?
glacial drift deposited, rising sea levels, flooding, lakes/ponds can be created
What is the sudden movement of rock and land down a steep slope?
landslide
Compare and contrast alluvial fans and deltas.
both made by deposition
deltas- mouth of river. alluvial fans- land
What Coastal landform does this picture show?
wave-cut platform
What is abrasion?
the wearing down of rock surfaces by other rock or sand particles
What are continental glaciers and what two landforms are created by them?
thick sheets of ice that spread over large areas.
erratics and kettle lakes
What is a mudflow?
What can cause a bad mudflow?
water mixes with soil and rock and created mud that flows downhill
heavy rainfall
Compare and contrast erosion and deposition.
give me definitions and something they have in common
erosion- process by which sediment and other materials are moved from one place to another.
deposition- the process by which materials are laid down
common- change Earth's surface
Put these three landforms in the order of how long they take to form. (quickest to longest)
sea stack, sea cave, sea arch
sea cave, sea arch, sea stack
What is desert pavement and how is it created?
desert pavement- surface made of pebbles and small broken rock
created by deflation. deflation is the removal of sand and tiny particles
What are alpine glaciers and what landforms do they make (four different)?
glaciers that form in mountainous areas.
arete, cirques, horn, u shaped valleys
What is a creep?
Explain this picture.
the extremely slow movement of material downslope.
the tree is slowly moving downhill but it is growing upward toward it's source of energy-the sun