Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc....

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Transcript of Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc....

Page 1: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.
Page 2: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Destructive Processes

• Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface.

• Mechanical weathering breaks rock into smaller pieces without changing it chemically.

• Soil is the material in which most plants grow.

• Erosion is the movement of weathered rock from place to place.

• Water, wind, glaciers, and ocean waves are agents of erosion.

Page 3: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Destructive process: Erosion

• Desert pavement is a surface of only bare ground and large stones.

• A groin a structure built at right angles to the beach. • A seawall is a structure built parallel to the shore.• Contour plowing is a method in which farmers plow

across the sides of hills instead of down their slopes. • Terracing is a method in which farmers plant crops

on terraces built on hillsides. • Storm drain management is a system of drains that

prevents flooding during heavy rainstorms.

Page 4: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Destructive processes:

Glaciers• Sea stacks are pillars of stone in the sea that

form from headlands.• Headland is a point of land that juts out into

the ocean.• To form a Sea arch, waves first carve away

softer rock in the headland. • Gravity is a force that pulls all objects toward

each other. • The sudden movement of rocks and soil down

side of a hill is called a landslide.

Page 5: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Destructive Process: Volcanoes & Earthquakes

• A volcano Is an opening in earth’s surface that lets hot, melted rock and gases escape. When erupted the mountain can be destroyed of changed.

• The shaking of the ground is an earthquake. This happens when the earth’s crust shifts at a fault. Wide cracks may open in the ground and sometimes even destroy buildings, roads and bridges.

Page 6: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Constructive Process

• Deposition is the dropping of sediment or particles by water, wind, or ice.

• A delta is a deposit of sediment that builds up at a rivers mouth a flat piece of land.

• Floodplain is when the deposit of a sediment forms a wide, flat area of land.

• Longshore current is a current that moves parallel to the shore.

Page 7: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Continued………

• Barrier island is a long, narrow island that forms along the coast.

• A sand dune is a hill of sand deposited by wind.

• A moraine is a ridge of sediment and rock left behind when a glacier melts.

• A dam is a structure built across a river to control its flow.

Page 8: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Controlling Processes that change the land

• A levee is a raised band of earth built along the edges of a river to prevent flooding.

• Beaches that erosion has eaten away are reclaimed. Sands from the ocean or nearby rivers are placed on the beach to rebuild it. This is called beach nourishment.

Page 9: Destructive Processes Weathering is the breakdown of rocks by the action of rain, cold, snow, etc. at or near Earth’s surface. Mechanical weathering breaks.

Living with earthquakes and volcano

• Seismologists study earthquakes. • Seismologists study seismic

waves, which are waves of energy that travel through Earth’s crust.

• Seismographs measure and record seismic waves.

• A seismogram is the record made by a seismograph. Scientist study seismograms to find out the size of an earthquake. It also helps them to figure out where faults exist in Earth’s crust.

•A tsunami is a huge wave caused by an earthquake under the ocean.


Weathering Essential Vocabulary. Weathering & Natural Erosion weathering – the processes that breaks down rocks, soils, or minerals at Earth's surface.

Weathering Essential Vocabulary. Weathering & Natural Erosion weathering – the processes that breaks down rocks, soils, or minerals at Earth's surface.

Weathering - EMUcivil.emu.edu.tr/courses/civl353/CIVL353-notes-6-weathering.pdf · 3 Physical or mechanical weathering Physical weathering is a physical action which breaks up rocks.

Weathering - EMUcivil.emu.edu.tr/courses/civl353/CIVL353-notes-6-weathering.pdf · 3 Physical or mechanical weathering Physical weathering is a physical action which breaks up rocks.

Physical Weathering Physical weathering breaks rocks into smaller pieces but does not alter their chemical compositions. – Examples- Abrasion caused by.

Physical Weathering Physical weathering breaks rocks into smaller pieces but does not alter their chemical compositions. – Examples- Abrasion caused by.

CHAPTER SEVEN Weathering. Section 1: Weathering Surface processes that work to break down rock are called weathering. Weathering breaks rock into.

CHAPTER SEVEN Weathering. Section 1: Weathering Surface processes that work to break down rock are called weathering. Weathering breaks rock into.

Erosion and Deposition How is erosion different than weathering? Weathering breaks rocks apart whereas erosion moves weathered particles from one place.

Erosion and Deposition How is erosion different than weathering? Weathering breaks rocks apart whereas erosion moves weathered particles from one place.

Weathering - UW Oceanography · Mechanical Weathering Exfoliation: Rock breaks apart in layers that are parallel to the earth's surface; as rock is uncovered, it expands (due to the

Weathering - UW Oceanography · Mechanical Weathering Exfoliation: Rock breaks apart in layers that are parallel to the earth's surface; as rock is uncovered, it expands (due to the

Weathering, Erosion, and Deposition. Weathering Weathering is the process that breaks down and changes rocks. It can be caused by air, ice, water, chemicals,

Weathering, Erosion, and Deposition. Weathering Weathering is the process that breaks down and changes rocks. It can be caused by air, ice, water, chemicals,

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

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

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

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

Rocks and Weathering - · PDF fileErosion •Erosion is the removal of rock particles by wind, water, ice or gravity. •Weathering breaks rocks into smaller pieces and then the forces

Rocks and Weathering - · PDF fileErosion •Erosion is the removal of rock particles by wind, water, ice or gravity. •Weathering breaks rocks into smaller pieces and then the forces

Earth’s Surface: Chapter 4 Section 1 Mechanical and Chemical Weathering Learning Targets: 1) I can describe how mechanical weathering breaks down.

Earth’s Surface: Chapter 4 Section 1 Mechanical and Chemical Weathering Learning Targets: 1) I can describe how mechanical weathering breaks down.

Weathering and Erosion Notes€¦ · Weathering Overview • Mechanical weathering breaks apart rocks so chemical weathering can change their composition. • Mechanical weathering

Weathering and Erosion Notes€¦ · Weathering Overview • Mechanical weathering breaks apart rocks so chemical weathering can change their composition. • Mechanical weathering

Chapter: Weathering and Soil › cms › lib08... · weathering covers the surface of Earth. 2. Weathering gradually breaks rocks into smaller and smaller fragments. 3. Plants and

Chapter: Weathering and Soil › cms › lib08... · weathering covers the surface of Earth. 2. Weathering gradually breaks rocks into smaller and smaller fragments. 3. Plants and

Chapter 6 Weathering and Soil. Types of Weathering Mechanical Weathering – Breaks apart rock without changing its chemical composition Examples – Plant.

Chapter 6 Weathering and Soil. Types of Weathering Mechanical Weathering – Breaks apart rock without changing its chemical composition Examples – Plant.

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

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

Weathering Erosion Deposition -breaks down the Earth - moves the Earth – drops off, to build the Earth How does weathering, erosion, & deposition act in.

Weathering Erosion Deposition -breaks down the Earth - moves the Earth – drops off, to build the Earth How does weathering, erosion, & deposition act in.

Weathering and Erosion. Physical weathering Physical or mechanical weathering breaks rock into smaller pieces without altering their chemical composition.

Weathering and Erosion. Physical weathering Physical or mechanical weathering breaks rock into smaller pieces without altering their chemical composition.

Weathering and Soil Formation Chemical Weathering - Rocks and Weathering As weathering breaks apart rock, the surface area exposed to weathering increases.

Weathering and Soil Formation Chemical Weathering - Rocks and Weathering As weathering breaks apart rock, the surface area exposed to weathering increases.

Chapter 5: Weathering and Soils - Ohio State University · PDF fileOBJECTIVES • Recognize that weathering breaks down minerals and rocks and occurs as a result of both mechanical

Chapter 5: Weathering and Soils - Ohio State University · PDF fileOBJECTIVES • Recognize that weathering breaks down minerals and rocks and occurs as a result of both mechanical

Weathering & Erosion Choose OK. What is weathering? Weathering is the process that breaks down rock and other substances on Earth’s surface. The forces.

Weathering & Erosion Choose OK. What is weathering? Weathering is the process that breaks down rock and other substances on Earth’s surface. The forces.