Age of Earth (FL SC.7.E.6.3 & E.6.4)

Front

What does the discovery of marine fossils in a mountain region suggest?

Back

The region was once underwater.

Front

Why are fossils important for understanding Earth's history?

Back

They provide evidence of past life forms and environments.

Front

Which method would you use to determine the absolute age of a rock?

Back

Radioactive dating.

Front

What can scientists learn from studying the layers of rock in which fossils are found?

Back

The relative age of the fossils.

Front

Which of the following best explains why fossils of the same species are found on different continents?

Back

The continents were once connected and have since drifted apart.

Front

What is the Law of Superposition?

Back

In undisturbed rock layers, the oldest layers are at the bottom and the youngest are at the top.

Front

What is relative dating?

Back

A method used to determine the age of rocks or fossils in relation to other rocks or fossils.

Front

What is radioactive dating?

Back

A technique used to determine the age of materials by measuring the decay of radioactive isotopes.

Front

What do fossils tell us about past environments?

Back

Fossils provide clues about the climate, geography, and ecosystems of the past.

Front

What is a fossil?

Back

A preserved remains or traces of ancient organisms.