Chapter 12 Weathering The breakup of rock due to exposure to processes on the Earth’s surface.

Slides:

Advertisements

Similar presentations

Advertisements

Rocks and Weathering Chapter 6 Section 1. Weathering and Erosion  Weathering is the process that breaks down rock and other substances at Earth’s surface.

WEATHERING AND EROSION. WEATHERING Weathering is a type of erosion. Weathering happens when rocks are exposed to… – Atmosphere – Hydrosphere – Living.

Weathering and Erosion Weathering means the process of breaking down rocks and other substances at Earth’s surface.

The Earth’s Changing Surface

8-1 Rocks and Weathering How do rocks and weathering affect Earth’s surface? What are the causes of mechanical weathering ands chemical weathering? What.

W EATHERING Weathering, Soil, and Erosion

Earth Science With Mr. Thomas. What is weathering & erosion? The breakup of rock due to exposure to processes that occur at Earth’s surface. There are.

Chapter 7 Weathering and Soil

Weathering and Soils Practice Test. QUESTION: What kind of weathering is represented by the following picture?

Aim: What is weathering ? I. Weathering – the breakup of rock due to exposure to the atmosphere. A. Erosion – is the removal and transport of earth materials.

Weathering The natural breaking down of rocks and other materials on the Earth’s surface. A slow continuous process that affects all substances exposed.

Types of Weathering Mechanical Chemical.

Weathering and Soil Formation

1 9.1 Weathering. 2 Describe how potholes form. Describe how water flows down into cracks that form of potholes.

WEATHERING AND EROSION WEATHERING AND EROSION Questions: What is meant by weathering? How does weathering happen? What areas tend to have more weather.

Weathering 01/05/ pgs IN: How is sediment/soil formed?

Weathering The process by which rock is broken down into smaller pieces May be physical or mechanical (they mean the same thing) May be chemical May be.

Weathering 1/4/ a pgs IN: How does sediment form? Glue in the new Table of Contents.

Weathering The breakdown of rocks into small particles at the Earth’s surface.

Physical Weathering Mechanical/ physical weathering: The physical breaking up of rock but does not change composition.

Unit 1 Lesson 2 Weathering

Unit 1 Lesson 2 Weathering

Chapter 14: Weathering.

Mechanical versus chemical

Rock Cycle Unit 3 – What is weathering

Weathering is the physical and chemical breaking down of rocks (the lithosphere) into smaller pieces or particles by wind, water, ice, plants, animals,

The Shape of the Earths Surface

Weathering and Erosion

Weathering, Erosion, and Soil

Mechanical & Chemical Weathering

Weathering and Erosion

Weathering & Erosion.

Weathering, Erosion, and Soil

Physical (Mechanical) and Chemical Weathering

Weathering of Rocks Weathering - Breakdown of rocks into pieces (sediment) 2 main types of weathering to rocks Mechanical weathering requires physical.

Weathering is the process that breaks down rock and other substances at Earth’s surface.

AIM: DO NOW: HW:.

Weathering Chapter 5.1.

How does the surface of the Earth change?

Weathering and Erosion

Weathering and Soil Chapter 7.

Rock is physically broken into smaller pieces

TOPIC IX: WEATHERING AND EROSION

Weathering and Soil Formation

Weathering Ch. 12.

Weathering and Erosion

What causes Weathering?

Weathering Chapter 5.1.

Weathering. Weathering Weathering is the physical and chemical breaking down of rock material into smaller fragments due to exposure to processes that.

Weathering And Erosion

Unit 1 Lesson 2 Weathering

9.1 Weathering.

AIM: DO NOW: HW:.

Weathering of Rocks.

Unit 1 Lesson 2 Weathering

Unit 1 Lesson 2 Weathering

Weathering And Erosion

Three Basic Definitions

Presentation transcript:

Chapter 12 Weathering The breakup of rock due to exposure to processes on the Earth’s surface

Mechanical Weathering There are 4 types of physical weathering….. Breaking a rock into smaller pieces WITHOUT changing it’s composition DISINTEGRATION or “physical” weathering

Frost Wedging Water in the cracks of rock freezes, expands and pushes the rock apart, breaking it Remember, water EXPANDS as it freezes

Abrasion TO SCRATCH Water, wind or glaciers can move sand, gravel and other rocks causing them to scrape against one another, wearing each other away

Plant and animal action Tree roots can grow into rocks, breaking them apart Animals can dig into the soil, breaking rocks and allowing water to weather it

Exfoliation Rocks that get pushed upward become exposed to the air, breaking or peeling off

Chemical Weathering There are 3 types of chemical weathering….. A rock’s minerals are changed into different substances; hence the composition changes DECOMPOSITION

Reaction with water Water can dissolve minerals Water can combine with gases to make acids, eating away at rock Carbonic Acid Hydrolysis

Acid Rain Water combines with air pollutants like Nitrogen and Sulfur to create acids

Oxidation Chemical reaction of oxygen with other substances, thus causing rust

Rates of Weathering….. Mechanical Weathering…. Chemical weathering…. Prefers a cold, dry climate Prefers a warm, moist climate

Mineral composition… Some minerals are more resistant to weathering, like quartz Sandstone weathers easily while marble does not