Weathering and Erosion Lab - PowerPoint PPT Presentation

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Weathering and Erosion Lab

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  1. Weathering and Erosion Lab

  2. Station 1 • Students placed vinegar (an acid) on powdered calcium carbonate and watched bubbles form as a sign of a chemical reaction. This station is designed to demonstrate chemical weathering of limestone due to acid rain, such as in the Hill Country region.

  3. Station 2 • Before After • Wave action on beaches

  4. Station 3 • Students used straws to blow sediments. They discovered that sand is much easier to move than pebbles.

  5. Station 4 Erosion of sediment forming river valley • Erosion of a river valley • Before After Deposition in a delta

  6. Mechanical weathering through freezing and thawing. Marbles were repeatedly boiled and cooled in ice water. Station 5

  7. Station 6 Salt is place d in the bottom of the inner cup, which has a hole in the bottom. Then, water is poured over the top, drips through the salt dissolving some, and into the bottom cup as a solution. This represents the dissolving of rock in water that flows underground and is deposited in cave formations.

  8. Station 7 Talus slope Before Weathering After Weathering Students used a toothbrush to simulate wind erosion due to abrasion on the cliffs of the Palo Duro Canyon