chapter 27.1/27.2 Flashcards
(55 cards)
is the process that involves the physical or chemical breakdown of materials on earths surface.
weathering
is a mixture of weathered rock,organic matter,water and the air that is capable of supporting plant life.
soil
is the removal of surface materials through the process of weathering.
erosion
as rocks weather,erosional agents like water, ice, wind , and gravity move eroded materials from one place to another
sediment transport
when the erosional agent slows down (in case of water, wind or gravity) or melts (in case of glaciers),it drops this sediment load.
deposition
the land area that gathers water for a major river
drainage basin
the movement of water parallel to the shoreline
longshore current
what is the difference between weathering an erosion?
weathering is the breakdown of materials,erosion is the removal of surface materials
when the slope of a river decreases what happens to the rivers speed?
it also decreases
what are small streams called that flow into larger rivers?
tributaries
what is the land are called that gathers water for a major river
drainage basin
what is the boundary called that separates distinct drainage basin?
drainage divide
as water flows downhill under the influence of gravity,water erodes earths surface creating?
channels
what shape do young rivers carve out of Earths surface do to fast movement?
V-shaped
what type of rivers are wide with a smooth and gentle slope?
mature
when rivers flood and drop their sediment load what
flood plane
when a fan-shaped sediment deposit that forms out the mouth of a river is called?
delta
what are Distributaries?
branching channels created by deltas
what is it called when a river/stream enters into dry land?
alluvial fans
what are the two types of glaciers?
valley glaciers and continental glaciers
where do valley glaciers form?
high mountainous regions
where do continental glaciers form?
colder climates and they occupy large land area
where are the two continental glaciers located?
Greenland and Antarctica
what is a cirque?
bowl shaped basin