Weathering
This is the process of breaking down bigger rocks.
What is weathering?
What is the topmost layer?
As a stream forms, it erodes soil and rock to make this.
What is a channel?
The Grand Canyon was formed by this ancient river.
What is the Colorado River?
This process takes a long time.
What is weathering?
These are the two main types of weathering.
What are mechanical and chemical weathering?
This is the process of burning down woods to clear for new cropland.
What is slash and burn farming?
In the erosion process, the materials carried by a stream are called the streams _____________.
What is load?
A model river system would include a network of streams and river that drains into a what?
What is a runoff?
The rate at which a rock weathers depends on the following:
1.
2.
3.
What is:
climate
elevation
makeup of the rock
This is the grinding and wearing away of rock surfaces through the mechanical action of other rock or sand particles.
What is abrasion?
What is no till farming?
This word describes the area below the Earth's surface that fills with water.
What is groundwater?
River systems are divided into regions called what?
What is a watershed?
This kind of rock will weather more slowly than a softer rock like limestone.
What is granite?
These produce acids that can slowly break down rock. (Hint: think of a wooded area)
What are lichens?
In soil conservation, this reduces the power of the wind and their disruptive effects on soil.
What are wind breaks?
The loss of the topsoil.
This is the largest watershed in the United States.
What is the Mississippi River Watershed?
This is the process by which softer less weather-resistant rock wears away and leaves harder more weather-resistant rocks behind.
This is the chemical reaction in which elements, like iron, combine with oxygen to form an oxide.
What is oxidation?
This English economist and demographer created a mathematical model on human population.
Who is Thomas Malthus.
How might waves erode coastlines?
Back and forth movement loosening the sediment.
Sediment scrapes against one another.
This is the amount of water that a stream or river carries in each amount of time.
What is the discharge?
When a cap rock acts as a flat protective rock it can create this landform.
What is a plateau?