Download VALLEYS!

VALLEYS!
By: Samantha EasterBrown
~A valley is a
landform that is
lower than the
surrounding area
The Shape
~The form of a valley
depends upon the rate
at which deepening and
widening goes on. Vshaped valleys are
caused by forces such
as erosion and rivers
~V-shaped valley, sometimes called a river
valley, is a narrow valley with steeply
sloped sides that appear similar to the
letter "V" from a cross-section.
How is it Formed?
• A valley is a hollow or surface depression
of the earth bounded by hills or
mountains, a natural trough in the earth's
surface, that slopes down to a stream, lake
or the ocean, formed by water and/or ice
erosion. Systems of valleys extend through
plains, hills, and mountains
Characteristics
•
• One factor is
the resistance of
material
through where
the river
channel is
cutting.
• Erosion by rivers is a
main valley-forming
process; other
processes, such as
movement of the earth's
crust and glaciers, also
have an important part
in some cases
The rate at which a
river deepens its
valley depends on
several factors.
One factor is how
fast the water is
going down a
channel. The water
will generally
reach a maximum
at the point where
the slope is steep.
Where Are Valleys Found?
• Valleys are
mainly in the
north part of
western
Australia
Summary
A valley is a long, narrow region of low land
between ranges of mountains, hills, or other
high areas, often having a river or stream
running along the bottom. Valleys are most
commonly formed through the erosion of
land by rivers or glaciers. They also form
where large regions of land are lowered
because of geological faults!!