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Activating Strategy. Study Jams Video Breaker and Whoosh JUST WRITE THE NOTES IN WHITE PRINT The other is information to make you more intelligent about erosion…and know some cool facts to share with others!!. Erosion.

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Activating strategy
Activating Strategy

Study Jams Video

Breaker and Whoosh

JUST WRITE THE NOTES IN WHITE PRINT

The other is information to make you more intelligent about erosion…and know some cool facts to share with others!!


Erosion
Erosion

  • Process by which soil and sediment are transported from one location to another


Erosion by gravity

Erosion by Gravity

p. 359-361


Open the flap t op half notes
Open the flapTop half: Notes

  • Gravity is the force that moves rock and other materials downhill.



Examples
Examples

  • Landslides

  • Mudflows

  • Slump

  • Creep


Landslide
Landslide

Sycamore Canyon

LaConchita




Mudflows
Mudflows

Mount St. Helens




Bottom half picture
Bottom Half:Picture

  • Now illustrate erosion by gravity

  • One giant scene with the examples of erosion by gravity


What if
What if…

What if you could buy a mountain home near a river or on the waterfront?


Things you should know before buying a waterfront property what do you think
Things you should know before buying a waterfront propertyWhat do you think???

Pros:

  • good view,

  • use of beach

  • boat docking

Cons:

  • could have restrictions on use of the beach with protected plants and animals

  • flooding

  • high insurance costs


Things you should know before buying a mountain home
Things you should know before buying a mountain home…

  • Pros:

  • High property value because of the beauty of the land

  • mineral rights (you might find minerals on the mountain and can make profit from them

  • Cons:

  • Ice and snow can cause problems trying to get around

  • small creeks can flood and cause erosion

  • might not have access to electricity, internet, sewage systems, etc.


Erosion by Water

p. 308-314


Top half notes
Top Half:Notes

  • Moving water is the major agent of erosion that has shaped the Earth’s land surface


Bottom half picture1
Bottom Half:Picture

  • Now illustrate erosion by water

  • One giant scene with the examples of erosion by water


Website for more information
Website for more information

http://www.geolsoc.org.uk/gsl/education/resources/rockcycle/page3462.html


These two photos were taken from the same place 63 years apart. How are they alike? How are they different?

1941 2004


Ag upsala glacier south america
Ag apart. How are they alike? How are they different? Upsala Glacier, South America


Grinnell glacier montana
Grinnell Glacier, Montana apart. How are they alike? How are they different?

  • 1935

  • 2005


South cascade glacier washington
South Cascade Glacier, Washington apart. How are they alike? How are they different?


Erosion by ice
Erosion by Ice apart. How are they alike? How are they different?

  • A glacier is a huge mass of ice and snow that moves over land. It erodes and deposits large amounts of rock material.

  • p. 352-356


How glaciers form
How glaciers form apart. How are they alike? How are they different?

  • Over time, the weight of the snow packs the snow and forms a giant mass of ice.

  • Gravity causes them to flow slowly like a “river of ice”


Glacier ice is the largest reservoir of fresh water on the planet, storing an estimated 75 percent of the world’s supply


A glacier can range in length from the equivalent of a football field to more than 100 miles
A glacier can range in length from the equivalent of a football field to more than 100 miles.





Mountain valleys are typically “V” shaped before being taken oven by a glacier; during glaciation, the valley widens and deepens and becomes “U” shaped.



Erosion by wind
Erosion by Wind remain unnamed.

  • Wind carries and deposits sediment.

  • Deserts, coastlines, and areas with little plant coverage are the most affected by wind erosion.


Sand Dunes remain unnamed.

Piles of sand deposited by wind

- Leeward side has a steeper slope

What do you see in the picture that is helping to slow down erosion?

leeward

leeward

windward


At the beach
….at the beach remain unnamed.

  • How did humans slow down erosion in this picture?


In the desert
….in the desert remain unnamed.


Barchan remain unnamed. dunes of the Namib Desert

Crescent shaped dunes formed from a unidirectional (one-direction) wind.


Hueco Bolson Desert – Texas remain unnamed.

Ripple marks are miniature dunes within a dune formed by crosswinds (not more than 2 inches tall). They appear to be traveling in a different direction than the large dune.



Rock formations in the wadi desert in egypt
Rock formations in the remain unnamed.Wadi Desert in Egypt


Arches National Canyon, Utah remain unnamed.

Rock Arches --formed when wind and water weather (erode) softer material first.


Mt remain unnamed.. Falconer - Canada

Ventifact—formed when wind carries fine particles that work like a sand blaster (i.e. sand, silt, clay, and ice particles)


Desert pavement remain unnamed.

Deflation--formed in arid environments when wind carries finer, more lightweight particles such as sand away; large particles are left behind and protect from further erosion


Loess Deposits - Banks, Pennsylvania remain unnamed.

Yellowish, fine grained silt and clay sized particles formed by glaciers millions of years ago; carried and deposited by wind


Pedestal rock remain unnamed.Africa

What caused the rock to look like this??

Base of a rock is weathered and eroded more quickly due to abrasion (sand blasting)

Wind could only pick up sand grains a couple of feet.


Erosion by Human Activity remain unnamed.

Although moving water is the major agent of erosion that has shaped the Earth’s land surface; Human activity causes 10 times more erosion of the continental surface of the Earth than all natural processes combined.


Why is this critical
Why is this critical? remain unnamed.

  • Earth's surface involves a balanced process, where new soil forms at about the same rate as it erodes.

    ****If humans are stripping soil at that rate, nature won't be able to keep up***

  • Almost all the land that is capable of producing crops is being used by the rapidly growing population.


R remain unnamed.enewable resource

  • is a natural resource which can replenish with the passage of time

    Examples

    water (hydroelectricity)

    solar energy

    biofuel (contains energy from living organisms)

Non-renewable resource

--used faster than it is made by the earth

Examples

natural gas, fossil fuels, metal ores (in human timeframe)


Help!!! remain unnamed.

What do we do now?


Terracing

Soil Conservation remain unnamed.

--protection, preservation, restoration

Terracing

Crop Rotation

Banaue rice terraces, Philippines


Check each page
Check each page remain unnamed.

Name on the back with class period

Notes—definition of each type of erosion

Illustrations

  • Quality drawings (I’m not an art teacher, but try your best to clearly illustrate!)

  • May need labels

  • Color!!

    DUE TUESDAY 10/29


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