What do round mountains, rusty bikes, paint-chipped houses, and potholes have in common? Stay tuned for the answer after this commercial break.
WEATHERING! And you thought it would be hard!
What happens to the mountains when the snow thaws?
MECHANICAL WEATHERING Created by a physical change. Freezing & Thawing Abrasion Animal Actions Plant Growth Release of Pressure Rock still looks the same or is made up of the same material, but changes physically. Example – Water – Ice
Abrasion
CHEMICAL WEATHERING Breaks down rock through chemical changes. Could change the chemical make up. Water Oxygen Carbon Dioxide Living Organisms Acid Rain
Water – Chemical Weathering
Pollution from large factories causes acid rain.
What are signs of weathering that you see around Mt. Vernon?