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.
Station 2 • Before After • Wave action on beaches
Station 3 • Students used straws to blow sediments. They discovered that sand is much easier to move than pebbles.
Station 4 Erosion of sediment forming river valley • Erosion of a river valley • Before After Deposition in a delta
Mechanical weathering through freezing and thawing. Marbles were repeatedly boiled and cooled in ice water. Station 5
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.
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