Aug. 28

Topics from chapter 1:

scientific method
- ex: measuring the Earth's circumference (proving the Earth is a sphere)
topography
- landforms
geologic record:
- principle of uniformitarianism
  - stratigraphy
layered Earth
- evidence from seismic waves
- evidence from Earth's density
- evidence from chemical composition
Earth systems: preview of the semester:
- climate system
- plate tectonic system
- geodynamo system
geologic time
- oldest rocks
- evolution of life