Earth Science Week

Earth Science WeekEarth Science Week

http://www.earthsciweek.org/whathttp://www.earthsciweek.org/whatisesw/index.htmlisesw/index.html

Mass MovementMass Movement

Changing Earth’s SurfaceChanging Earth’s Surface

ReviewReview

WeatheringWeathering ErosionErosion SoilsSoils

Cycle of Erosion and Cycle of Erosion and DepositionDeposition What is a cycle? What are some What is a cycle? What are some

cycles?cycles? Deposition – the agents of erosion Deposition – the agents of erosion

deposit sedimentdeposit sediment– Sediment – material moved by Sediment – material moved by

erosion erosion

Cycle of Erosion and Cycle of Erosion and DepositionDeposition The cycle that wears down and The cycle that wears down and

builds up Earth’s surface. builds up Earth’s surface.

5 Agents of Erosion5 Agents of Erosion

GravityGravity Running waterRunning water GlaciersGlaciers WavesWaves Winds Winds

Mass MovementMass Movement

One of several processes that One of several processes that move sediment downhill.move sediment downhill.

Can be very fast or very slowCan be very fast or very slow Gravity!!!Gravity!!!

Mass MovementMass Movement

LandslideLandslide MudflowMudflow SlumpSlump CreepCreep http://www.youtube.com/watch?vhttp://www.youtube.com/watch?v

=mknStAMia0Q=mknStAMia0Q

LandslidesLandslides

Most destructiveMost destructive Rock and soil slide quickly down a Rock and soil slide quickly down a

steep slopesteep slope

MudflowsMudflows

Rapid downhill movement of a Rapid downhill movement of a mixture of water, rock, and soil.mixture of water, rock, and soil.

Occur after heavy rains in a Occur after heavy rains in a normally dry area. normally dry area.

SlumpSlump

Stand up straight, arms at your Stand up straight, arms at your sideside

Slump your shouldersSlump your shoulders What happened?What happened?

A mass of rock and soil suddenly A mass of rock and soil suddenly slips down a slope.slips down a slope.

SlumpSlump

This is different from a land slideThis is different from a land slide The material moves down in a The material moves down in a

large mass.large mass.

CreepCreep

You tell me!!You tell me!!

CreepCreep

The very slow downhill movement The very slow downhill movement of rock and soilof rock and soil

Can occur on any slopeCan occur on any slope

http://videos.howstuffworks.com/http://videos.howstuffworks.com/hsw/11857-land-and-water-weathhsw/11857-land-and-water-weathering-and-erosion-video.htmering-and-erosion-video.htm