Changing Earth's Surface
JJ Test Unit 3
Terms in this set (36)
Small bits of larger objects
Any change that does not alter the chemical composition of a substance
Produces one or more new substances.
Process that breaks down rock andother substances
The process by which lots of broken rock are carried away
Process of erosion moves material
Occurs where the agents of erosion deposit, or lay down, sediment
What builds up the Earths surface?
Weathering, erosion and deposition cycle
Rock is physically broken into smaller pieces
Process that breaks down rocks through chemical changes
What are some natural agents of physical weathering?
Freezing and thawing, release of pressure, plant growth , actions of animals and Abraision.
Wearing away of rock by rock particles carried by water, ice, wind or gravity.
Wedges of ice in rocks widen and deepen cracks
What are agents of chemical weathering?
water, oxygen, carbon dioxide,living organisms, and acid rain.
Material is full of tiny connected air spaces that allow water to seep through it.
What does the Topography of an Area Include?
This includes the area's elevation, relief and landforms.
The height above sea level of a point on Earth's surface
Difference in elevation between the highest and the lowest parts of an area.
A feature of topography, such as a hill or valley, formed by the processes that shape the Earth's surface.
What are the main types of landforms?
Plains, mountains and plateaus
A landform made up of nearly flat or gently rolling land with low relief.
Landform with high elevation and high relief
A group of mountains that are closely related in shape, structure, area, and age.
A landform that has high elevation and more or less level srface
A large area of land where the topography is made up mainly of one type of landform
What are the different types of Mass Movement?
Landslides, Mudflows, slumps, and creep.
The force that pulls everything toward the center of the Earth.
Any one of several processes that move large amounts of sediment downhill.
Rock and soil slide quickly down a steep slope.
Rapid downhill movement of mixture of water, rock, and soil.
A mass of rock and soil suddenly slips down a slope.
The very slow downhill movement of rock and soil.
What is an example of Plateau?
Columbia Plateau in Washington state.
Give some examples of major landform regions.
Great Plains, Rocky Mountains
Another term to describe landform regions, Hilly topography and lowlands, which are regions of plains with low elevations.
What is the difference between Landslide and Mudflow?
A landslide is steep slopes of soil and rock , Mudflow is gentle slopes of water, rock and soil. They both move quickly and are mass movement caused by gravity
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