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The Force of Moving Water
Transcript of The Force of Moving Water
By, Elizabeth Wall
What Enables Water to do Work?
As gravity pulls water down a slope, the water's potential energy changes to a kinetic energy that can do work. When energy does work, the energy is transferred from one object to another.
Energy is the ability to work or cause change.
Potential energy is energy that is stored and then waits to be used later
Kinetic energy is energy an object has due to it's motion
A load is the amount of sediment that a river carries.
Abrasion is the wearing away of rock by grinding action
Friction is a force that opposes the motion of one surface as it moves across another surface
Turbulence is when water moves every which way
How does sediment enter rivers and streams?
Most sediment washes or falls into as a result of mass movement and runoff. Other sediment erodes from the bottom or sides of the river.
What factors effect a river's ability to erode and carry sediment?
A river's slope, volume of flow, and the shape of it's streambed all effects how fast the river flows and how much sediment to erode.
1. How does sediment enter rivers and streams?
a. gravity pulling sediment down a slope
b. sediment falls into the river
c. sediment erodes from the bottom or sides of the river
d. both a and b
2. What factors affect a river's ability to erode and carry sediment?
a. slope, volume of flow, and shape of its streambed
b. slope,volume of water, and shape of streambed
c. both a and b
d. none of the above