What is a prerequisite for erosion?
What causes the rockslide?

Which of the following terms does not apply?
Use "detritus" in a sentence.
Use "sediment" in a sentence.
Use "sedimentary basin" in a sentence.
Rock A and B are weathering and eroding at different rates.
This waterfall demonstrates differential weathering. Which rock is the harder rock?
Now your turn! In English, explain why we see differential weathering in this waterfall?
What is the main force that drives (causes) the waterfall?