|1. What is the difference between mechanical and chemical weathering? 10-1||mechanical weathering is when something weathers something physically chemical weathering is a change in matter and involves|
|2. Describe the weathering processes of each chemical weathering agent.
|Water-when you place something in water and it dissolves.
Acid Rain- when pollution is mixed with rain.
acid ground water-when limestone mixes with polluted water a chemical reaction happens and can create caves.Acids in living things-Linchen make acid
|3. Describe the weathering processes of each mechanical weathering agent.
|Ice-the alternative freezing and thawing of soil and rock called frost action. Abrasion-the breaking rock created by mechanical action. Plants-roots creates and expand cracks. Animals-create underground holes by digging through soil.|
|4. What is the most important and most common agent of chemical weathering? Why do you think? 10-1||Water-water is used in lots of thing it can also change this very fast in harmful and beneficial ways.|
|5. What is the difference between weathering, abrasion, erosion, and deposition? 10-1||Erosion is the movement of the product of weathering. Abrasion and deposition are agents of weathering|
|6. What are the two most important factors in determining the rate of weathering? 10-2||Climate and elevation|
|7. How do hotter temperatures and wet climates affect the rate of weathering?
|It increases chemical weathering such as oxidation|
|8. What are the horizons of a soil profile? What letter represents each horizon? What is found in each horizon? 10-3||O horizon is ground level. A horizon is topsoil. B horizon is subsoil. C horizon is weathered parent material. R horizon is bedrock.|
|9. What layer of soil would you find the most humus?
|Horizon A or topsoil.|
|10. Which horizon does soil formation begin? 10-3||Horizon R|
|11. List some examples of decomposers and explain why they are important for soil? 10-3||Worms, they decompose plant and animals. mushrooms decompose dead trees and plants and help fertilize the soil.|
|12. Which soil horizon layer forms last?
|R horizon known as bedrock|
|13. What is humus? 10-3||organic component of soil created by decomposition of plants and other materials.|
|14. What is soil?
|dirt, earth, clay etc. A dark or dark brown material which is a mixture of organic remains.|
|15. Which horizon is called the parent material? 10-3||C horizon|
|16. What does it mean if soil is fertile? (10-3)||it is rich,good to grow in, has lots of nutrients.|
|17. Compare the particle sizes of sand, clay, and silt.
|18. Why is it good to have permeable soil or rocks?||so air and water can flow between the soil/rock.|
|19. Define soil conservation.
|Keeping soil fertile, stopping soil erosion, and stopping soil nutrient loss.|
|20. What are the 5 soil conservation techniques? Describe how each is used to conserve soil. Basic info.
|contour plowing-instead of going strait down they go across for less water build up at the bottom. Terracing-it prevent water build up that causes erosion. No-Till farming-leaving old stalks to cover from rain. Cover crops-use a different crop a season|
|helps use less nutrients from crop. crop rotation-switch crops every year uses less or different nutrients of the soil.|