Geological Processes
- Surfaces are relatively smooth
- What makes the surfaces not exactly flat?
Impact Craters
- Circular
- More small ones than large ones
- Generally 10x larger than the object that created them
- 10-20% as deep as they are wide
- Central peak
- Walls pressing back on the middle
Volcanism
- Volcanoes
- Underground molten rock finds path to the surface
- Lower density, squeezed up, expanding gasses
Tectonics
- Plate tectonics
- Transform boundaries
- Divergent boundaries
- Convergent boundaries
Erosion
- Breakdown or transport of rock
- Glaciers, rivers, wind
- Sand dunes
- Sedimentary rock
Geology Astronomy