the dust bowl. bhp2k

The Dust Bowl

https://www.youtube.com/watch?v=CM3ZHMBhP2k

https://www.youtube.com/watch?v=jQYKJaWuj0Y

Weathering : The breaking down of rocks on the Earth into smaller pieces.

Erosion: The process of moving weathered rock and sediment from one place to another.

Deposition: The dropping or settling of eroded material.

Weathering

https://www.youtube.com/watch?v=XteN4hRrbJM

Erosion

https://www.youtube.com/watch?v=2311yO5opVk

https://www.youtube.com/watch?v=d0jVywral14

http://www.ck12.org/earth-science/Erosion-and-Deposition/enrichment/Earths-Natural-Processes-Example-2/

http://mamontoff.org/weathering%20-%20erosion%20-%20deposition.htm

Natural Resources

Mexico City

Beijing, China

New York City

According to the group Texas PEER, air quality in Texas has worsened significantly under Gov. George W. Bush’s administration. The Houston-Galveston area has had eight of the top ten ozone (smog) peaks in the nation, far surpassing Los Angeles.

Houston, TX

Renewable Energy ResourcesCan be replaced in a lifetime.

Nonrenewable Energy Resource

Cannot be renewed in a lifetime and often take millions of years to make.

https://www.youtube.com/watch?v=eUs4oA1RIMQ

Soil.

https://www.youtube.com/watch?v=iGfco7kNzJA

How Soil Forms

Humus is dark, organic material that forms in soil when plant and animal matter decays. When plants drop leaves, twigs, and other material to the ground, it piles up. This material is called leaf litter. When animals die, their remains add to the litter.

Different Types of Soil

https://www.youtube.com/watch?v=uS7zfeK4OTQ

Soil Conservation: is a way of managing soil that reduces erosion and maintains the nutrients plants need.

Strip Cropping: Planting wind breaks between sections of crops can stop or slow down erosion of top soil by the wind.

Terracing

Strip Cropping

Crop Rotation: Rotating crops so the soil is not depleted of nutrients.