Weathering erosion pictures
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Weathering is the process of decomposing, breaking up, or changing rocks without moving them from their original location. Erosion is the process of moving weathered rock and soil particles from their original location by forces like wind, water, or ice. Weathering can occur through chemical processes that alter the minerals in rocks or through mechanical processes that break rocks into smaller pieces without changing the minerals. Once weathered, smaller rock pieces can be eroded and transported elsewhere by natural forces.
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Biological Weathering
This document discusses biological weathering, which is the breakdown of rocks and other materials caused by living organisms. It occurs through both mechanical and chemical means as organisms interact with rocks. The main causes of biological weathering are: 1) man and animals through activities like construction and burrowing; 2) higher plants and their roots, which can penetrate cracks and exert disruptive force; 3) microorganisms like bacteria, fungi, and mosses that extract nutrients and produce compounds aiding decomposition. An advantage is that biological weathering creates nutrient-rich soil allowing plant growth, though it can also cause rock instability.
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The document discusses the weathering of rocks and soils. It notes that rocks are composed of minerals and broken down through various weathering processes, including physical, chemical and biological weathering. Physical weathering is caused by temperature changes breaking rocks. Chemical weathering involves chemical reactions with water that change the composition of rocks. Biological weathering occurs through the action of plants and animals interacting with rocks. Weathering leads to the formation of soil.
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The document discusses the three main types of weathering that rocks undergo: mechanical, chemical, and biological. Mechanical weathering breaks rocks into smaller pieces through forces like frost cracking, but does not alter the chemical composition. Chemical weathering changes the minerals within rocks through reactions with water and acids that decompose them. Biological weathering occurs as organisms break rocks down physically and chemically.
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There are two main types of weathering: mechanical/physical weathering and chemical weathering. Mechanical/physical weathering includes exfoliation, ice wedging, organic wedging, and abrasion which break rocks into smaller pieces through forces like heat, freezing water, plant and animal activity, and rocks rubbing together. Chemical weathering involves processes like hydrolysis, oxidation, dissolution, and reactions with acids that cause rocks to decompose and break down on an atomic scale when in contact with water and acids from sources like carbon dioxide, pollution, and decaying plants.
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Lecture and study guide rocks, soils, erosion, weathering and deposition
This document provides an overview of rocks, soils, erosion, weathering, and deposition. It discusses the three main types of rocks - igneous, sedimentary, and metamorphic - and how they are formed. Soil formation through weathering and the layers of the soil profile are explained. Various agents and processes of erosion, weathering, and deposition are defined. Methods for controlling erosion like contour farming, terracing, and planting vegetation are also outlined. The key message is the importance of protecting natural resources and keeping the earth healthy.
Weathring and erossion
Weathering is the breakdown of rocks and minerals at their location through contact with the atmosphere, water, and organisms. It occurs through both physical and chemical processes. Physical weathering includes thermal stress from temperature changes, exfoliation from pressure release, and abrasion where particles are reduced in size by water, ice, and wind. Chemical weathering includes hydrolysis where minerals react with water, oxidation where substances react with oxygen, and dissolution where acids from carbon dioxide and pollutants break down minerals. Erosion is the movement of weathered rocks and minerals by gravity, wind, water, ice, or glaciers to other locations.
Weathring and erossion
weather is the decomposition of rocks and other man made materials . erossion is the transport of that materials
Similar to Weathering erosion pictures (20)
Ch.5.less.5.how do weathering and erosion shape the land
Ch.5.less.5.how do weathering and erosion shape the land
Ch.5.less.5.how do weathering and erosion shape the land
Ch.5.less.5.how do weathering and erosion shape the land
Lecture and study guide rocks, soils, erosion, weathering and deposition
Lecture and study guide rocks, soils, erosion, weathering and deposition
Weathering erosion pictures
- 1. What is the difference between weathering and erosion? Weathering is the process of decomposing, breaking up, or changing the color of rocks. Weathering may be caused by the action of water, air, chemicals, plants, or animals. Chemical weathering involves chemical changes in the minerals of the rock, or on the surface of the rock, that make the rock change its shape or color. Carbon dioxide, oxygen, water, and acids may all cause chemical weathering. Mechanical weathering is the process of breaking a large rock into smaller pieces without changing the minerals in the rock. Mechanical weathering may be caused by frost, ice, plant roots, running water, or heat from the sun. Once the small pieces of rocks are changed or broken apart by weathering, they may start to be moved by wind, water, or ice. When the smaller rock pieces (now pebbles, sand or soil) are moved by these natural forces, it is called erosion. So, if a rock is changed or broken but stays where it is, it is called weathering. If the pieces of weathered rock are moved away, it is called erosion. 1
- 2. Erosion caused by rain or irrigation, showing how water can wash away the soil 2
- 3. Shoreline erosion caused by the ocean 3 Soil erosion caused by rain
- 4. Erosion at the edge of a road, caused by rain 4 Erosion caused by flooding
- 5. The Grand Canyon, formed by erosion from water and wind 5
- 6. Erosion by waves, forming a natural bridge 6
- 7. Natural Bridge, Virginia, formed by erosion from river water 7
- 8. Weathering and erosion caused by wind 8
- 9. Erosion in fields caused by wind blowing loose soil 9
- 10. Wind erosion of sand dunes Dust storm caused by wind erosion of loose soil 10
- 11. Extreme erosion caused by wind over long periods of time 11
- 12. Chemical weathering caused by chemicals in the rocks reacting with the groundwater Chemical weathering of a statue, caused by acid rain 12
- 13. Chemical and mechanical weathering, caused by rain and wind 13
- 14. Mechanical weathering caused by glacial ice Mechanical weathering by frost and ice, causing the rocks to break apart 14
- 16. Mechanical weathering called exfoliation, causing the rocks to break into layers 16
- 17. 17 Chemical weathering causing minerals in the rocks to dissolve, and then form stalactites and stalagmites in a cave
- 18. Mechanical weathering showing how rocks can be broken by ice or water 18
- 19. 19 Mechanical weathering caused by tree roots Mechanical weathering caused by plant roots, lichens, and mosses on the rock
- 20. Mechanical weathering and erosion caused by a landslide 20
- 21. Natural Chimney, West Virginia What do you think caused this rock formation? 21 Compiled for Project PROMISE, 2007