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97

____% of water on Earth is Salt Water

ice caps

2% of fresh water is locked up in ____ ____

1; ground

___% of fresh water we can drink is mostly found in the _____

Drainage basin; watershed

All land that drains into a river is called a ______ _____ or a _____

Downhill

Water drains ______

Divide

The bounday between two watersheds

River System

A river and all of its tributaries.

Ocean

River Systems carry eroded rock/sediment to the ______

Velocity

Distance water travels in a certain time

Gradient

Steepness of the slope of a river/stream

Discharge

Volume of water that passes certain point

Channel

The path that water flows through

Deposition

When a river or stream no longer has energy to transport suspended materials

mechanical

Rivers weather mostly by ____ means

Abrasion

_____ is the most common way a river is weathered mechanically

Load; Solution; Suspended; Bed Load

Eroded materials transported by water are called _____ and can be transported as: _________, ________, _____ _____

River Valleys

_____ _____ are carved over time by the rivers flow

Floodplain

The area of a valley covered when the river floods

Canyon

A river valley with very steep almost vertical sides

Ground Water

Water that enters the ground and is stored. Impacted by type of rock or soil.

50

____% of United States drinking water is provided by Ground Water

Water Table

When more ground water supplies are used than can recharged, there is a drop in the _____ _____

Subsidence

Term for when ground compacts as water supporting it goes dry

Salination

When salt water replaces freshwater
-especially near coastal areas

Pollution

When pollutants such as fertilizers, oils, pesticides can be carried by rain into the ground water

Porosity

The amount of water solid or rock can hold based on space between grains in the material

higher

Well sorted/ more rounded particles have a _____ porosity than poorly sorted less rounded particles

Permeability

The rate at which water can pass through pore spaces in a rock

Impermeable

A material that water cannot pass through is called _____

Zone of saturation

when all pore spaces are filled with water

Water Table

The upper zone of saturation

Zone of aeration

The area between the water table and surface that can still hold water

Spring

Where the water tables reached the surface there is a _____

Aquifer

enough water is stored to provide water through wells

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