Geologic Change

Front

What is the Geologic Time Scale?

Back

The Geologic Time Scale is a record of the known history of rocks and fossils.

Front

What does Relative Dating determine?

Back

Relative Dating dates rocks by estimating their age.

Front

What does Absolute Dating determine?

Back

Absolute Dating dates rocks by determining their exact age.

Front

What do ice cores teach scientists?

Back

Ice cores provide information about past climates, carbon dioxide concentrations, and snowfall amounts, but not the climate when dinosaurs existed.

Front

What does the Law of Superposition state?

Back

The Law of Superposition helps scientists determine the relative age of rock layers.

Front

List the layers of rock from oldest to youngest: A, B, C, D, E.

Back

E, B, C, D, A.

Front

What is the principle of uniformitarianism?

Back

The principle of uniformitarianism states that the processes that shape the Earth today are the same as those that have occurred in the past.

Front

What is a fossil?

Back

A fossil is the preserved remains or traces of a once-living organism.

Front

What is the difference between relative age and absolute age?

Back

Relative age is the age of a rock compared to other rocks, while absolute age is the actual age of a rock in years.

Front

What are index fossils?

Back

Index fossils are fossils of organisms that were widespread but only existed for a short period, used to date rock layers.