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Water

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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