Weathering and Erosion

By: Emilee Walker

and

Ryan Mooberry

Weathering

• Weathering is the breaking down of rocks, soil, and artificial materials.

Erosion

• Erosion is when soil and rock are being moved away from the Earth’s surface by wind, water flow, and transportation.

Pictures of different types of weathering

Pictures of weathering and erosion

Causes of weathering and erosion

• The Sun’s heat causes the surface rocks to expand, fracture, and moisture can evaporate.

• When water freezes it can expand cracks in rocks and can carry away small rocks and dust.

Factors controlling the rate of erosion

• Weather conditions• The amount of speed

of water and wind.• Type of land surface

(examples- mountains have hard surfaces, plains have soft top soil)

Differences of weathering and erosion

• Weathering involves two processes that work together to decompose rocks. Both processes occur in one place. There not any movement in weathering. Erosion is when rock particles are moved by air, water, or ice.

Soil erosion

soil erosion is when soil is removed by water or wind.

Historic Hopi Buttes area

• Hopi Buttes volcanic field is a monogenetic volcanic field.

• It is located on the Colorado plateau.

Erosion in Washington’s south west coast

• Jetties cause beaches to grow and might make them erode.

• Dams on the Columbia River reduced the sand supply.

• Beach growth is slowing down.• Beaches that were growing are

now eroding.• El Nino a phenomenon that

brings storms impacts the shore line.

• Earth quakes hit Washington’s coast.

Coastal erosion prevention

• Place breakers in the water at certain points to slow down waves.

• You can plant plants to attract life. If there are things living there, than there will be a smaller chance for erosion.

• Barrier walls can be placed at the beach to stop waves.

Wind erosion prevention

• You can use a tillage a mechanical preparation of the soil for seeding .

• By rotating soil it keeps the soil covered avoiding wind erosion.

• You can strip crop. Strip cropping is when you alternate the crops. This reduces the chance of wind erosion.

Beach erosion prevention

• You can build breakwaters and jetties perpendicular to the beach. this will help slow down erosion by catching sand on one side of the jetty as ocean current flowing along the shore flows past the jetty.

Geologic hazards: Landslides

Landslides in the united states cause about 3.5 billion dollars a year in damage . It can kill between 25 and 50 people.

Federal emergency management agency: landslides and mudflows

• Federal emergency management:

• Builds emergency kits.• Avoids building near

slopes.• Becomes familiar with the

land around them.• They build deflection

walls to direct mudflows around the building.

Solution for weathering and erosion

• to prevent erosion on the beach you can put breakers and barrier walls to stop waves from eroding the sand.

• To end weathering you can stop water from getting into rocks and cracking them.

Bibliography

• PICTURES• Kidsgeo.com• Tafoni.com • Geograph.org.uk• Ryen8thgradepage.blogspot.c

om• Science.nationalgeographic.co

m• Questgarden.com• Sciencedirect.com• Thehappyscientist.com• Pubs-usgs.ga• Ecomage.blogspot.com

• INFO• Enwikipedia.org• Answers.com• Wikianswers.com• Geomaps.wr.usgs.gov/parks/

misc/gweaero.html• Ehow.com• Ecy.wa.gov• Landslides.usgs.gov• Fema.gov• Recources.technet.ic

Thanks For Watching!

THE END