Sediment: materials moved by erosion. Deposition: laying sediment in new locations.
100
Define drainage basin & divide.
Drainage basin: land from which rivers collect their water. Divide: high ground between two drainage basins.
100
Define till & plucking
till: mixture of sediments that a glacier deposits. plucking: process of glacier picking up rocks.
100
Define spit
a beach that projects like a finger out into the water
100
Define deflation
a process where wind removes surface materials
200
What are four different types of mass movement?
Landslide, mudslide, slump, creep
200
What is runoff?
Runoff is all the water that moves over Earth’s surfaces, carrying tiny bits of soil particles.
200
Compare the two types of glaciers
valley glaciers are long narrow glacier that form when snow and ice build up high in a mountain valley. continental glaciers cover much of a continent or large island. they are much larger than valley glaciers and spread out over large areas of land.
200
What are the two ways that waves erode the land?
Impact and abrasion
200
How does wind compare to all the other agents of erosion?
It's the weakest
300
What five things can cause erosion?
gravity, water, glacier, waves, wind
300
What are the three types of river deposits?
Alluvial fan, deltas, and flood plains
300
What is an ice age and what type of glacier is responsible for them?
Ice ages are known as time periods when continental glaciers have covered large parts of the Earth’s surface, formed by continental glaciers.
300
Name and describe the three types of landforms created by waves.
Sea-caves, wave-cut cliffs, sea-arches
300
Name and describe the two things formed by wind deposition.
Sand dunes and loess deposits
400
Which is the most destructive type of mass movement?
Landslides
400
What are the five features that form from water/river erosion?
valleys, waterfalls, flood plains, meanders, and oxbow lakes
400
How do glaciers form?
Glaciers can only form where more snow falls than melts. When temperatures seldom rise above freezing, snow builds up year after year. The pressure of more and more snow compacts the bottom layer of snow into ice.
400
What three things do wave deposition cause?
beaches, longshore drift, spits
400
Describe the effect deflation normally has on land
deflation does not usually have a great effect on the land
500
Which type of mass movement differs in speed from all the rest and why?
Creep is different because it moves slowly
500
What five factors determine the amount of runoff in a certain area?
amount of rain, vegetation, soil type, shape of the land, how land is used
500
Name and describe the two processes by which glaciers erode land.
Abrasion: grinding away of rock. Plucking: when a glacier flows over the land picking up rocks.
500
How are waves formed?
The energy in waves comes from wind that blows across the water’s surface. As the wind makes contact with the water, some of its energy transfers to the water.
500
Name and describe the main way wind causes erosion
The main way that wind causes erosion is deflation. When wind blows over the land, it picks up the smallest particles of sediment and moves them through the air.