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W&E - Soil

Weathering and Erosion Study Stack. Soil Study Stack.

What are the different types of weathering? Mechanical Weathering & Chemical Weathering
What is weathering? Weathering is the process that breaks down rock into smaller pieces.
What are the five types of mechanical weathering and what do they each do? ABRASION - weathering caused by wind, water, ice, etc..... FREEZING AND THAWING - water seeps through cracks in rock and freezes, expands, and breaks the rock The next card will have the rest of the answers
What are the five types of mechanical weathering and what do they each do? HEATING AND COOLING - lots of heat cause rocks to flake, and then the pieces cool down and chip off PLANT GROWTH - plant roots grow deep in the ground and can grow into rock, cracking it The next card will have the rest.
What are the five types of mechanical weathering and what do they each do? ANIMAL ACTIONS - animals dig and build homes underground, putting pressure on and breaking rock
What are the five types of chemical weathering and what do they each do? WATER - the universal dissolvent, can break down anything CARBONATION - carbon dioxide particles mix with water particles to produce a weak acid LIVING THINGS - some plants produce weak acids that can break down rock
What are the five types of chemical weathering and what do they each do? OXIDATION - oxygen particles mix with water to produce acids ACID RAIN - pollutants get into clouds and into the rain that falls on Earth; the rain has acids now that will slowly break down rock
What is soil made up of? Soil is made up of humus, air, water, rock particles, and minerals.
What is humus? Humus is a mixture of decayed remains from a once-living being.
What are the layers of soil? Litter - Topsoil - Subsoil - Horizon C - Bedrock
How much good and useful topsoil do we have on Earth? The top of 1/24 of Earth is the good and useful soil we have on Earth.
What are the different types of soil and which one is best for living things? Clay - Sand - Loam Loam is the best type of soil for living things.
What is topsoil? Topsoil - the first layer of soil underground; dark brown color; rich with humus and living things; very few rocks; perfect for plants; lets water and air pass through easily; crumbly
What is subsoil? Subsoil - the layer beneath the topsoil; reddish color; has enough humus and few few living things;lets water and air pass, but it's very hard; has lots and lots of small rocks
What is Horizon C? Horizon C - layer beneath the subsoil; beige color with many rocks; medium-sized to large rocks; has little to no humus; has no living things; water and air cannot pass through
What is erosion? Erosion is the movement of rock particles from one place to another.
What can cause erosion? Wind - Water - Ice - Gravity - Natural Forces
What is bedrock? Bedrock - the layer beneath Horizon C; made of pure rock; no living things or space for water and air to pass through; rocky color
Why do we need soil? Soil is the start of our natural food chain. Producers grow in soil, animals eat producers, animals eat animals, and we eat everything in between.
What would life be like without soil? Everyone would have to live on seafood and seaplants.
Created by: Sarahelena