Rock Layers, Fossils and Geologic Time Scale Review

Front

What is the least likely material to become fossilized?

Back

Skin is the least likely material to become fossilized compared to bones, teeth, and shells.

Front

Which rock layer is considered the youngest?

Back

Mudstone is the youngest rock layer among Siltstone, Conglomerate, and Limestone.

Front

How do you determine the relative age of rock layers?

Back

Relative age dating involves arranging rock layers in order from oldest to youngest based on their position.

Front

What does extinction mean?

Back

Extinction is the state of no longer existing.

Front

Why are the oldest fossils found at the bottom of rock layers?

Back

The oldest fossils are found at the bottom because sedimentary layers are deposited over time, with newer layers on top.

Front

What are fossils?

Back

Fossils are the preserved remains or traces of ancient organisms.

Front

What is the geologic time scale?

Back

The geologic time scale is a system of chronological dating that relates geological strata to time.

Front

What is sedimentary rock?

Back

Sedimentary rock is formed by the accumulation and compaction of mineral and organic particles.

Front

What is relative age dating?

Back

Relative age dating is a method used to determine the age of rocks and fossils in relation to one another.

Front

What is the significance of the Law of Superposition?

Back

The Law of Superposition states that in undisturbed sedimentary rock layers, the oldest layers are at the bottom and the youngest are at the top.