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. . Hoffman Drainage Tunnel. Record Observations: What caused these changes? . Variables that impact the Rate of Weathering. Climate Rock TypeBefore moving on, discuss and record hypothesize on how these variables would impact the rate of weathering.. Cleopatra's Needle (Granite) 3500 years old, constructed ~ 1500BC.
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1. Hoffman Drainage Tunnel (concrete)
4. Hoffman Drainage Tunnel
5. Variables that impact the Rate of Weathering Climate
Rock Type
Before moving on, discuss and record hypothesize on how these variables would impact the rate of weathering.
6. Cleopatra’s Needle (Granite)3500+ years old, constructed ~ 1500BC
8. ROCK TYPE
9. Field Trip Extension Visit a local cemetery OR
Take a walk and observe building materials.
Do you see examples of some features that have been weathered to a greater degree than others? Record your observations.
What can you hypothesize accounts for differences in the rate of weathering among these features?