History of Planet Earth

Front

What type of rock do most fossils form in?

Back

Sedimentary rock is where most fossils are found.

Front

What evidence supports that an area was once covered by a large body of water?

Back

The presence of oceanic aquatic animal fossils indicates that an area was once covered by water.

Front

What do we call fossils found in different locations but in the same layer of rock?

Back

Index fossil.

Front

What is a layer of rock used to determine the time period in which it was formed?

Back

Key bed.

Front

Which geological period is the oldest?

Back

Triassic period.

Front

What is sedimentary rock?

Back

Sedimentary rock is formed by the accumulation of sediments, often containing fossils.

Front

What are fossils?

Back

Fossils are the preserved remains or traces of ancient organisms.

Front

What is an extinct fossil?

Back

An extinct fossil is a fossil of an organism that no longer exists.

Front

What is a trace fossil?

Back

A trace fossil is a fossil that shows evidence of the activity of an organism, like footprints.

Front

What is the Mesozoic era known for?

Back

The Mesozoic era is known as the age of dinosaurs.