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Weathering & Erosion

Explore the processes of weathering and erosion through our detailed foldable guide. Learn how rocks break down into smaller pieces through mechanical and chemical weathering, influenced by agents such as ice, wind, and water. Differentiating factors affecting weathering rates, the roles of erosion and deposition, and the landforms created by these natural processes are thoroughly explained. Discover the impact of climate, elevation, and the hardness of rocks on weathering, and recognize how sediments are transported and deposited to form diverse landscapes.

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Weathering & Erosion

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  1. Weathering & Erosion

  2. Blue foldable • Outside: Weathering • Inside: The break down of rock into smaller and smaller pieces • Forms sediment • Happens to rocks that are not moving

  3. Chemical Mechanical or physical Blue: Two Flaps

  4. Blue flap: Mechanical or Physical Weathering • Inside: • Breakdown of rock by physical means • Just changes the look of the rock

  5. Blue flap: Chemical Weathering • Inside: • Breakdown of rock by chemical means • Forms a new substance

  6. Green foldable: • Outside: Agents of Mechanical Weathering • Inside on flaps: • Ice • Wind • Water • Gravity • Plants • Animals

  7. On inside of Agents of weathering foldable • Abrasion: rocks grind against each other and wear away their surface • Rocks rub together in streams • Chalk on chalkboard

  8. Ice: • inside: Ice wedging: water freezes in cracks. When it expands, the crack gets bigger. • Wind: • Inside: wind forces rocks into each other • Water: • Inside: rivers and streams roll rocks into each other

  9. Gravity: • Inside: gravity pulls rocks down into each other • Ex: rock slide • Plants: • Inside: roots break apart rock • Animals: • Inside: Animals that dig break apart rocks

  10. Pink foldable: • Outside: Agents of Chemical Weathering • Inside on flaps: • Water • Acid rain • Lichens • Air

  11. Water: • Inside: water can eat away certain types of rocks & minerals • Acid rain: • Inside: acids in rain causes rocks to change • Lichens: • Inside: plants that give off acid & eat away rocks • Air: • Inside: air causes oxidation • Oxidation: oxygen in air react with another element to form an oxide • Creates rust

  12. Gold foldable • Outside: Differential weathering • Inside: Process where softer, less weather resistant rocks wears away leaving harder rock behind.

  13. Yellow Foldable • Outside: 4 things that affect the rate of weathering • Inside on flaps: • Hardness of rock • Surface area exposed • Climate • Elevation

  14. Hardness of rock: • Inside: harder rocks weather slower than soft rocks • Surface area exposed: • Inside: smaller rocks weather faster than larger rocks • Climate: • Inside: oxidation occurs more in warm, wet climates • Elevation: • Inside: rocks at higher elevations are exposed to more water and wind -> more weathering • Steeper mountains cause more weathering

  15. Purple Foldable: • Outside on 1st flap: Erosion • Inside: the transport of sediments from one place to another • Outside on 2nd flap: Deposition -Inside: when sediments are dropped off

  16. White Foldable: • Outside: Agents of Erosion & Deposition • On flaps: • Water • Wind • Ice • Gravity

  17. Water: Inside: moves sand &small rocks and deposits them in a new location Wind:Inside: moves sand and small rocks and deposits them in new locations Ice: Inside: Ice moves sand and all kinds of rocks to new locations Gravity:Inside: sediments move downhill

  18. Salmon Foldable: • Outside: Landforms created by weathering, erosion, & depositionInside labels: - Green = wind - Pink = Gravity - Yellow = Ice - Blue = Waves

  19. Landforms made by wind • Sand Dunes

  20. Landforms made by Gravity: rock falls, landslides

  21. Landforms made by Ice: Glue in whole white picture

  22. Landforms created by waves • Sea stack Sea arch

  23. Beaches • Sandbars • Barrier spit

  24. Sea cliff • Wave cut terrace

  25. Headlands

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