1. Chemical weathering occurs faster as temperatures warm and rainfall increases. On a global scale, how might human activities change the rate of chemical weathering?

2. In terms of geologic time, do you think that landforms resulting from differential weathering, such as natural arches and hoodoos, are short-lived or permanent features? Explain.

3. Are there subterranean caverns near where you live? If you do not know, how would you find out?

4. The process of weathering has been going on since Earth first formed and never stops, yet many rocks are still “fresh” and relatively unweathered. Why haven’t all of Earth’s rocks been weathered away long ago?