"Sedimentary Rocks and Erosion"
Bellwork:
1) The three types of sedimentary rock are ___________, ___________, and shale.
2) Acid makes ____________ fizz because it has calcite in it.
3) A Pp (purple) flower and a PP (purple) flower will have ____% purple seedlings.
- Rock layers: sedimentary rocks form in layers
Layers of rocks in the same sequence are HORIZONTAL
- DEFINE Erosion:
•When water, water, ice, chemicals, gravity, and other forces break down rocks and move the rocks and sediments
•Ex: Water runs through a river, wearing down the river into a canyon รจ tiny bits of rock wash away as sand
- Differential erosion: some rocks wear away more quickly than others, creating peaks and slopes and interesting landforms. See this interesting landforms picture gallery.
Homework: Study for Friday's quiz on rocks and natural selection
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