Download 3-3 The Force of Moving Water File

3-2 Water Erosion
p. 85-88 (Purple Book)
1. energy
It is the ability to do work or
cause change.
2. potential energy
It is energy that is stored
and waiting to be used.
(Example: Water behind a
dam has potential energy.)
3. kinetic energy
It is energy an object has due
to its motion. (As gravity
pulls water down a slope, the
water’s potential energy
changes to kinetic energy
that can do work.)
4. load
It is the amount of sediment
a river carries.
5. bed load
It is made of large particles
that are pushed, rolled, or
bounced along the streambed.
6. suspended load
It is made of small particles
that are lifted by the force
of the water and travel in the
river’s current.
3-2 Water Erosion
p. 85-88 (Purple Book)
7. dissolved load
It is made of microscopic
particles that are so small
they are dissolved in the
water and carried throughout
the river.
8.
slope
It describes the amount that
a river drops toward sea level
over a given distance.
9.
volume (of flow)
It describes the amount of
water flowing in a river.
8.
streambed shape
It is the shape of the river
bed, which determines how
much friction, turbulence, and
speed a river has.
11. friction
It is the force that opposes
motion of one surface as it
moves across another. (In a
river, friction from the banks
and bottom causes water to
slow down.)
12. turbulence
It is a type of movement of
water in which the water
moves many directions
instead of straight
downstream. (Rocks and
curves cause turbulence.)