Weathering and Erosion

What forces cause weathering?

• wind & water

• living things – plants & animals

• chemicals – oxidation & carbonic acid

• all of the above

The above picture is a hoodoo. Which two most likely created this?

• chemicals and animals

• water and lightning

• living organisms and ocean spray

• wind and water

(a)   is the idea that the earth changes uniform ways and this happens all over Earth.

• Uniformitarianism

• Catastrophism

• Plate Tectonics

• Evolution

Mechanical Weathering is (a)   .

• Any process of rain, snow, sleet, hail

• any process that breaks rock down into smaller pieces without changing the chemistry of the rock

• the process in which rock is broken down chemically, physically, metaphysically and peripherally

• movement of wind, water, plants, animals, or temperature changes that cause rocks to change into minerals and other rock forms

The photo above is an example of what type of weathering?

• animal burrowing

• root wedging

• ice wedging

• wind

The decayed organic matter in soil is called (a)   .

• Humus

• Compost

• Topsoil

• Loam

Soil is important to farming because (a)   .

• Soil delivers toxins to plants

• Soil delivers takis to plants

• Soil delivers water and nutrients to plants

• Soil is not important to farming

​ (a)   is a soil that is nutrient rich, containing a mixture of humus, clay, and minerals.​

• Subsoil
• Gravel
• Topsoil
• Bedrock

_______​ (a)   __________ weathering is dependent upon materials like calcium, calcium carbonate, water, limestone and other substances changing soil, rocks and other portions of the earth’s crust.

• Chemical Weathering
• Biological Weathering

• Mechanical Weathering
• Erosion

What is weathering?

• small pieces of sediment getting carried away

• breaking down of earth’s materials into smaller pieces

• rain, snow, sleet, or hail

• a word that describes what is going on outside