Sort the following examples into physical and chemical weathering. Place the letter in the appropriate box in the chart below. Water strikes a rock on the bottom of a stream and breaks it into pieces
Water in the cracks of rocks freezes and breaks open the rocks
An organic acid makes holes in rocks
Waves in a river lift rocks and drop them and they break
Roots of plants push against rocks and make cracks in them
A rock crumbles easily when iron is exposed to oxygen
Glaciers move along a rocky surface and form cracks in the surface

Physical Weathering Chemical Weathering