Chemical Mechanical Weathering

Feb 22, 2012

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Weathering - the disintegration and decomposition of rock at or near the surface of the earth.

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Chemical Mechanical Weathering

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1. Chemical & Mechanical Weathering How is soil formed?

Mechanical Weathering

Denudation. Erosion. Weathering. Mass Movement. Rivers. Glaciers. Sea. Mechanical Weathering. Chemical Weathering. 1.Abrasion 2.Attrition 3.Hydraulic Action 4.Solution. 1.Abrasion 2. Attrition. 1.Abrasion 2.Attrition 3.Compressed air 4. Solution. Soil Creep Earthflows

212 views • 1 slides

Gradation and Mechanical Weathering

Gradation and Mechanical Weathering. Ms. Inden Geography 12. Gradation. http://myweb.cwpost.liu.edu/vdivener/notes/streams_basic.htm. What is Gradation?. All activities of the earth's surface that build up some areas and wear down others Rivers Waves and currents Glaciers Wind

681 views • 22 slides

Chemical Weathering of Rocks

Chemical Weathering of Rocks . Exploring the Environmental and Economic Impact of the End-Products of Chemical Reactions . Vocabulary of Instruction environment environmental impact chemical reaction ozone depletion economic impact degradation heavy metals sulfur dioxide rust

478 views • 13 slides

Physical (Mechanical) and Chemical Weathering

Physical (Mechanical) and Chemical Weathering. Created By: Mr. Kreeger. Page References and Homework . Page References Page 131-136 Homework Do problems # 1a,b and c, 2a, 3a,b and c, 5a Do problems # 2b, 5b,c and d Do problem # 6. Table of Contents. Weathering Defined

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weathering mechanical weathering chemical weathering oxidation

Weathering. weathering mechanical weathering chemical weathering oxidation. Weathering and Its Effects. The mechanical and chemical processes that change objects on Earth’s surface over time are called weathering .

622 views • 19 slides

Mechanical Weathering

Mechanical Weathering. Weathering . The process by which larger rocks are broken down into smaller and smaller rocks Destructive force. Mechanical Weathering. The breaking down of larger rocks into smaller rocks WITHOUT changing the rocks’ minerals. Physical Change.

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Weathering: Mechanical or Chemical?

Weathering: Mechanical or Chemical?. (Take notes as we go through the slide show.). What is Mechanical Weathering?. The process that breaks rocks into different shapes and smaller pieces. (Changes the rock’s physical appearance).

1.18k views • 46 slides

Physical (Mechanical) Weathering

Physical (Mechanical) Weathering. We are looking for descriptions and examples of destructive processes: Ice wedging Root pry Exfoliation Abrasion. Ice Wedging. Water seeps into cracks in rocks Temperature decreases and the water in the rocks freezes

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Earth’s Surface: Chapter 4 Section 1 Mechanical and Chemical Weathering

Earth’s Surface: Chapter 4 Section 1 Mechanical and Chemical Weathering. Learning Targets: 1) I can describe how mechanical weathering breaks down rocks 2) I can explain how chemical weathering breaks down rocks. 3) I can identify factors that affect the rate at which weathering occurs.

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Physical and chemical weathering

Physical and chemical weathering. Weathering-breaking down rocks Two types: 1. Mechanical weathering-just breaks it down and does not have a chemical change 2. Chemical weathering-the rock’s minerals change into different substances. BrainPOP -weathering.

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Mechanical Weathering

Mechanical Weathering. 4 Types. Ice & Water. Abrasion. Plants & Animals. Exfoliation. 1. Ice & Water. explanation of how ice and water causes weathering. Add picture. Ice Wedging. Also called… “Ice Wedging”. Insert explanation of what ice wedging is. Insert picture or diagram.

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Weathering Physical/ Mechanical Weathering

Weathering & Erosion. The breakdown of the materials of Earth’s crust into smaller pieces . Process by which rocks are broken down into smaller pieces by external conditions (wind, water, ice…) . Weathering Physical/ Mechanical Weathering. 5 Types of Physical weathering.

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Chemical Weathering

Chemical Weathering. 3 Types. Hydrolysis. Carbonic Acid. Oxidation. 1. Hydrolysis. definition. Insert picture. Feldspar + H 2 0 = CLAY. See More. Hydrolysis. Insert a big picture (or two) of hydrolysis . Chemical Weathering. 2. Carbonic Acid. Explain what carbonic acid is

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Chemical Weathering

Mechanical Weathering. Chemical Weathering. or. Look at each picture and decide if it is an example or chemical weathering or mechanical weathering. Ch. Chemical. Use white board: And write. M. Mechanical. Mechanical Weathering. Chemical Weathering. or. Ice Wedging. Mechanical

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A) Mechanical / Physical weathering:

A) Mechanical / Physical weathering:. Never in isolation Granular disintegration. Frost shattering:. Insolation weathering:. Wetting and drying (slaking):. Exfoliation (spheroidal weathering):. Salt crystal growth:.

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Chemical Weathering

Chemical Weathering. Aim: What factors cause chemical weathering?. Describe what you see and hypothesize how it got this way…. What happened to lady liberty?. 1. Chemical weathering. a. Rock is broken down by chemical changes b. Rock is changed to different minerals and becomes weaker.

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CHEMICAL WEATHERING

CHEMICAL WEATHERING. CAVE FORMATION. With underground rivers and spectacular formations, Jenolan cave in Sydney is among the finest and oldest cave systems in the world.

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Physical Weathering Chemical Weathering Rates of Weathering

Introduction to Weathering Professor Jeffery Seitz Department of Earth & Environmental Sciences California State University East Bay. Physical Weathering Chemical Weathering Rates of Weathering. National Park Service Photo. 1. Weathering Earth is a very dynamic environment:

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Mechanical Weathering

Mechanical Weathering. Mechanical weathering affects all rock on Earth’s surface. Release of Pressure As rock erodes, release of pressure causes the outside of the rock to crack and flake off.

921 views • 17 slides

Mechanical (physical) Weathering

Mechanical (physical) Weathering. The process of breaking down sediment without changing the rocks chemical composition. Frost wedging. Physical Weathering. Biological activity (Mechanical Weathering) –(sometimes chemical). Tree roots splitting rock. Biological activity.

1.16k views • 93 slides

Chemical & Mechanical Weathering

Chemical & Mechanical Weathering. How is soil formed?. Weathering - the disintegration and decomposition of rock at or near the surface of the earth. It affects the rocks in place and no transport is involved. This distinguishes weathering from erosion.

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B. Chemical Weathering

B. Chemical Weathering. Definition Chemical weathering is the decomposition or decay of rocks in situ due to the chemical reactions between rock minerals and air, moisture, rainwater, or seawater. B. Chemical Weathering. Causes / conditions favouring chemical weathering

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Chemical Mechanical Weathering

Chemical Mechanical Weathering

Presentation Transcript

Mechanical Weathering

Gradation and Mechanical Weathering

Chemical Weathering of Rocks

Physical (Mechanical) and Chemical Weathering

weathering mechanical weathering chemical weathering oxidation

Mechanical Weathering

Weathering: Mechanical or Chemical?

Physical (Mechanical) Weathering

Earth’s Surface: Chapter 4 Section 1 Mechanical and Chemical Weathering

Physical and chemical weathering

Mechanical Weathering

Weathering Physical/ Mechanical Weathering

Chemical Weathering

Chemical Weathering

A) Mechanical / Physical weathering:

Chemical Weathering

CHEMICAL WEATHERING

Physical Weathering Chemical Weathering Rates of Weathering

Mechanical Weathering

Mechanical (physical) Weathering

Chemical &amp; Mechanical Weathering

B. Chemical Weathering

Chemical & Mechanical Weathering