Weathering Experiment: I took some different rocks from my yard (pebbles and decorative rocks bought at Home Depot) and placed them in a glass baby food jar. Then I had the students fill the jars with water and shake at 15 second intervals. Over time the decorative rock broke away and what looked like sand sediment appeared. We were able to weather our own rocks!
|The murky water is actually weathered sediment|
|A student's experiment write up|
|Looking at differences|
|Students comparison notes and inferences|
Chemical/Physical Weathering Picture Sort: After watching my PowerPoint on the different types of both physical and chemical weathering, that highlight some characteristics to watch for, we inferred from pictures what type of weathering each image was. For example, honeycomb appearance tells us salt-wedging has occurred. It was fun to guess which type of weathering each image was. To take it a step further, if a student could tell me the EXACT name of weathering that was happening they got a Super Scientist award (more on that in another post).