The Force of Moving Water. Work and Energy A river’s water has energy The Force of Moving Water Energy is the ability to do work.

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Presentation transcript:

The Force of Moving Water

Work and Energy A river’s water has energy The Force of Moving Water Energy is the ability to do work

Work and Energy There are two types of energy The Force of Moving Water Potential Energy Energy that is stored and waiting to be used later

Work and Energy There are two types of energy The Force of Moving Water Kinetic Energy The energy an object has due to its motion

Work and Energy As gravity pulls water down a slope, the water’s potential energy changes to kinetic energy that can do work The Force of Moving Water

The water you had in your bucket had POTENTIAL ENERGY The Force of Moving Water

When you poured the water from your bucket into your stream table the water’s potential energy changed to KINETIC ENERGY The Force of Moving Water

The water has kinetic energy due to its motion. Kinetic energy can do work. The water worked to erode your “river” The Force of Moving Water

Gravity caused the movement of the water. That’s why you used books to tilt the stream table down The Force of Moving Water

How did the water cause erosion? The Force of Moving Water Water picks up and moves sediment Erosion

The Force of Moving Water This is called Deposition Then the water deposits the sediment somewhere else Erosion

The Force of Moving Water Other sediment erodes from the bottom or sides of the river Most sediment washes or falls into a river as a result of mass movement and runoff

The Force of Moving Water Other sediment erodes from the bottom or sides of the river Most sediment washes or falls into a river as a result of mass movement and runoff

The Force of Moving Water The amount of sediment that a river carries is its LOAD Gravity and the force of the moving water cause the sediment load to move downstream

The Force of Moving Water When you poured a lot of water into your stream table you saw that the fast moving water lifted sand and other sediment and carried it downstream

The Force of Moving Water A river’s slope, volume of flow, and the shape of its streambed all affect how fast the river flows and how much sediment it can erode

The Force of Moving Water A river’s slope affects how fast the river flows and how much sediment it can erode The more books you placed under your stream table the greater the slope

The Force of Moving Water A river’s volume of flow affects how fast the river flows and how much sediment it can erode The faster you poured the water the more you increased your river’s volume of flow

The Force of Moving Water The shape of a river’s streambed affects how fast the river flows and how much sediment it can erode The more curves you put in your river the more sediment it eroded

The Force of Moving Water Where would you expect the water in this river to have the greatest amount of POTENTIAL ENERGY?