Law of Uniformitarianism

Law of Superposition

Index Fossils

Hutton's Contribution to Geology

Precambrian Era

Paleozoic Era

Mesozoic Era

Cenozoic Era

Layers of the Earth

Why is the inner core solid?

Wegner's Theory

Why couldn't Wegner prove his theory?

How was the Midatlantic ridge formed?

Sonar

Convection Curents

Which is denser oceanic crust or continental crust?

Which is older oceanic crust or continental crust?

Hess's Theory

Divergent Plates

Convergent Plates

Subduction Zone

What force is powerful enough to move continents?