Fossils and Superposition

Front

What is a fossil?

Back

Preserved remains of plants and animals from the remote past.

Front

In which type of rock are fossils usually found?

Back

Fossils are usually found in sedimentary rock.

Front

What does the law of superposition state?

Back

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

Front

How can we infer the past appearance of a canyon?

Back

By examining the current features and understanding geological processes, we can infer that the canyon was not as deep a thousand years ago.

Front

What is sedimentary rock?

Back

A type of rock formed by the accumulation of sediments, often containing fossils.

Front

What is the significance of the bottom layer in rock formations?

Back

The bottom layer is typically the oldest, according to the law of superposition.

Front

What are the three main types of rocks?

Back

Sedimentary, metamorphic, and igneous.

Front

What is an example of a fossil?

Back

A dinosaur bone or a leaf imprint.

Front

Why are fossils important to scientists?

Back

Fossils provide evidence of past life and help scientists understand the history of Earth.

Front

What can fossils tell us about the environment of the past?

Back

Fossils can indicate the climate, habitat, and geographical conditions of the time they were formed.