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Evolution of Landforms

Across
Name of the continent formed when all the continents drift together
Periods are divided into this
Length of time it takes for half of the atoms to change from unstable to stable in a radioactive substance
The aging technique used when you compare the age of an event or object in relation to other events or objects
Eons are divided into this
Era when no life existed on Earth
Era of the dinosaurs
Eras are divided into this
Down
Largest unit of time
Scientist created with discovering continental drift
Traces or remains of living things from long ago
Era when all life was in the oceans
Era of humans and modern times
Method of aging where you find the actual age of something
Types of fossils used for relative aging other materials around them