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Study Guide Ch.10
Chapter 10
| Question | Answer |
|---|---|
| 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. 10-1 | 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. 10-1 | 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? 10-2 | 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? 10-3 | 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? 10-3 | 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? 10-3 | 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. 10-3 | |
| 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. 10-4 | 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. 10-4 | 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. | |
| 8/ |
Created by:
Joshua sosa
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