weathering- the breakdown of rock into smaller and smaller pieces. mechanical weathering- is simply...

Summer and Davonta Chapter 10

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Page 1: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Summer and Davonta

Chapter 10

http://goanimate.com/movie/0nDfqajSD4cs/1

Weathering

Weathering- the breakdown of rock into smaller and smaller pieces.

Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical means.

Chemical weathering- the chemical breakdown of rocks and minerals into new substances.

Page 3: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Soil layers

There are three different layers of soil.

• Topsoil- contains more humus than any soil horizon.

• Subsoil- Where clays and dissolved substances from the topsoil collect.

• Bedrock- consists of partially weathered bedrock.

Page 4: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Different types of rock weather at different rates.

Differential weathering is the process by which softer, less weather-resistant rocks wear away, leaving harder, more weather-resistant rocks behind.

Rates of Weathering

Page 5: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Soil Conservation

Soil conservation consist of the various methods by which humans take care of the soil.

Soil provides minerals and other nutrients for plants.

Page 6: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Erosion

Erosion is the process by which wind and water transport soil and sediment from one location to another.

Page 7: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Tropical Climates- the air is very humid

and the land receives a large amount of rain.

Desert Climates- doesn’t receive much of any water.

Temperate Climates- rich soil, which allows a good place to farm.

Arctic Climates- little precipitation

Climates

Page 8: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Soil provides a place for animals to live.

The Importance of Soil

Earthworms, grubs, spiders, moles, and prairie dogs all live in soil.

Page 9: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Cover Crops and Crop Rotation

A cover crop is a crop that is planted between harvests to reduce soil erosion.

A Crop rotation is a common way to keep soils nutrient-rich.

Page 10: Weathering- the breakdown of rock into smaller and smaller pieces. Mechanical weathering- is simply the breakdown of rock into smaller pieces by physical

Conclusion

Over all, chapter ten defines all the different types of weathering.

It describes the layers of soil. Talks about the importance of soil, and

describes erosion. And it describes different types of

climates.

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