1 / 12

EQ: How do humans add to the erosion process?

EQ: How do humans add to the erosion process?. How do humans add to the erosion process ?. 1. What are natural and non natural ( human) agents of erosion ? 2. How can logging and mining lead to erosion? 3. How can farming lead to erosion 4. How can construction lead to erosion ?.

wynter-barton
Download Presentation

EQ: How do humans add to the erosion process?

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. EQ: How do humans add to the erosion process?

  2. How do humans add to the erosion process ? 1. What are natural and non natural ( human) agents of erosion ? 2. How can logging and mining lead to erosion? 3. How can farming lead to erosion 4. How can construction lead to erosion ?

  3. Human Activity and Erosion Natural agents of erosion: • Wind • Moving water • Gravity (landslides) • Waves • Glaciers (rivers of ice) Humans add to the erosion process: • Logging • Mining • Farming • Construction

  4. Logging People use treesto build homes, make furniture and paper. In a method called clear-cutting, all the trees in an area are cut down. Rootsthat used to hold the soil in place die and decay. Rain washes the soil away. Soil has been robbed of nutrients and minerals needed for plants to grow.

  5. Mining • To get minerals from the ground, miners strip away the surface of the land. • Strip-mining and open-pit mining remove plants from an area. • Plants prevent soil erosion by flowing waters and wind. • Without plants, erosion speeds up. • Thousands of years may pass before enough topsoil builds up to support plant life.

  6. Farming • Planting crops can benefit many people. • Planting crops and an unexpected natural event can produce a disaster. • From 1930 to 1937, a drought struck the mid-western part of the U.S. • Grasses could have protected the soil during the drought. • Winds picked up the topsoil and blew it 100s of miles eastward. • This event is known as the “Dust Bowl.”

  7. Construction • Building of roads, buildings, and communities removes natural barriers, such as plants, to erosion. • Erosion speeds up and the land becomes barren and ugly. • Today, city officials consider erosion when they plan new construction plans.

  8. Quick Check • What is MAINLY responsible for preventing erosion? A. mining B. farming C. rooting of plants D. logging

  9. Quick Check • Which human activity is related to logging? A. strip mining B. clear-cutting C. drought D. open-pit mining

  10. Quick Check • A landslide is an example of A. erosion B. a mining process C. A logging process D. A farming process

  11. Quick Check In what part of the United States was the “Dust Bowl” located? • A. northern • B. eastern • C. western • D. central

  12. Quick Check What was the MAIN cause of the “Dust Bowl”? A. floods B. Storms C. wind D. drought

More Related