Geology 210 - Class Preparation - Introduction - Age of the Earth and Structure

How old is the earth?  How do we know?

What are the major internal subdivisions of the earth?  What processes have led to this differentiation?

What is the difference between continental and oceanic lithosphere?  How is this reflect in the weight percent of component oxides of 'average' continental and oceanic crust?

Why is the hypsometric curve strongly bimodal?

What is the relationship between water depth and age of oceanic crust?

How do we classify landforms by size?