WEATHERING WED Cycle ESRT PAGE 6 The water
- Slides: 32
WEATHERING
W-E-D Cycle ESRT PAGE 6 The water cycle aides in the Weathering-Erosion. Deposition Cycle
Weathering Weathering: The breaking down of material at or near the Earth’s surface
Physical Weathering A. Physical (Mechanical) Weathering: Changes in the size and/or shape of a rock without changing the rock’s composition
1. Ice Wedging/Frost Action: Water in the cracks of rocks freezes -> volume of the water increases->makes cracks larger->water melts & evaporates
Physical Weathering 2. Plant Action: Tiny root hairs seek out the breaks in rocks ->roots grow and expand causing greater pressure -> breaks the rock further
3. Exfoliation: Peeling away of large sheets of loosened materials at the surface of a rock due to changes in pressure or temperature
Abrasion 4. Abrasion: The physical wearing down of rocks as they rub or bounce against each other. Five Natural Agents of Abrasion a. b. c. d. e. Flowing water Moving ice Waves Winds Gravity
Physical Weathering in Action Visualization
In Your Own Words (10 mins) Write the definition of physical weathering in your own words Draw 4 boxes In each box, define each type of physical weathering in your own words, or draw an illustration of what happens during each type of weathering
Chemical Weathering B. Chemical Weathering. Changes in the mineral composition of a rock thereby forming new substances. 1. Oxidation: Occurs when oxygen interacts chemically with minerals. The rusting of iron is an example of oxidation.
2. Hydrolysis/Water: Occurs when there are chemical reactions between water and minerals
A Famous Example
Dissolution/Acid 3. Dissolution/Acid: Occurs when minerals are “dissolved” over time - surface has a ‘sugary’ feel. Ex. Acid rain and carbonic acid are agents
Chemical Weathering in Action Chemical Weathering Visualization
In Your Own Words (10 mins) Write the definition of chemical weathering in your own words Draw 3 boxes In each box, define each type of chemical weathering in your own words, or draw an illustration of what happens during each type of weathering
Gravestone: Shale
Gravestone: Granite
Gravestone: Sandstone
Gravestone: Marble
Rates of Weathering Rates of weathering will be influenced by… 1. Exposed surface area- weathering occurs on the surface. The more surface exposed, the faster weathering will occur.
Rates of Weathering 2. Mineral compositionsome minerals are more resistant than others. For example, quartz is resistant to chemical and physical weathering.
The more resistant a mineral is to weathering, the more time it takes to wear down the material.
Granite vs. Limestone
Rates of Weathering 3. Climatic conditions Warm, wet climates favor chemical weathering. Cold, wet climates favor mechanical weathering Dry will have more mechanical
Frost wedging works best in areas where the temperature changes often- going from below freezing to above freezing regularly
Video https: //www. youtube. com/watch? v=RIak 3 Wvh 9 c If the video link doesn’t work, search for “Crash Course Kids Weathering and Erosion”
- Frost wedging drawing
- Sedimentary rock concept map
- Esrt rocks
- Esrt page 12
- Esrt pg 14
- Esrt page 2
- Weathering rocks
- Esrt pg 6
- Water and water and water water
- Physical weathering
- Kinds of weathering
- Define the term weathering?
- Example of chemical weathering
- Esrt sedimentary rocks
- Esrt pg 8
- Esrt pg 8
- What are sedimentary rocks
- Metamorphic rocks properties
- Esrt planets
- Esrt pg 15
- Esrt pg 8
- Esrt sedimentary rocks
- Esrt pg 15
- Esrt pg 8
- Esrt pg 15
- Brain pop water cycle
- Water cycle the hydrologic cycle
- Apa running head
- Hát kết hợp bộ gõ cơ thể
- Ng-html
- Bổ thể
- Tỉ lệ cơ thể trẻ em
- Voi kéo gỗ như thế nào