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Weathering Examples Physical Weathering Examples: Abrasion Dry climate, wind is most likely the major form of moving sediments/rocks to bounce them off each other. Also note the reddish color, this could be chemical weathering due to oxidation. Waves bounce sand and rocks off the shore to wear both down=abrasion. If the water dissolves any minerals in the rocks that would by hydrolysis (a type of chemical weathering. Root wedging: Frost Action: Potholes are formed when water gets in the cracks of a road, freezes and expands as it becomes ice. This happens repeatedly as water freezes during cool nights and melts during the day. Cars driving over the cracks cause further weathering by abrasion. The expansion of water when it freezes is the key thing to know about frost action. Frost Action Chemical Weathering Examples: Oxidation The reddish-orange color tells you the iron in the rocks is reacting with oxygen, making “rust”, hence the color. Acid Rain: Acid rain dissolves certain minerals in rocks, making statues made of marble or limestone rocks have less defined features. If acid rain collects and sits in small indents of a rock, it can dissolve minerals more quickly in that area and make holes or pockets in the rock. Lichens (biological chemical weathering): Lichens dissolve minerals in the rocks to break them down.