M + M LC1 Review

Front

What is the oldest rock type in a cross-section?

Back

The oldest rock type is typically found at the bottom of the cross-section.

Front

What is a mass extinction?

Back

A mass extinction is the extinction of many types of organisms at the same time.

Front

What is an imprint fossil?

Back

An imprint fossil is a type of fossil that shows the shape or outline of an organism, such as a trace fossil.

Front

What is an intrusion in geology?

Back

An intrusion is a body of igneous rock that has formed from magma that has cooled and solidified beneath the Earth's surface.

Front

How does the age of an intrusion compare to surrounding rock layers?

Back

An intrusion is always younger than the rock layers around it and beneath it.

Front

What can cause a species to go extinct?

Back

A species can go extinct due to environmental changes, such as the disappearance of their habitat or food sources.

Front

What is a trace fossil?

Back

A trace fossil is a type of fossil that provides evidence of the activity of an organism, such as footprints or burrows.

Front

What is the significance of rock layers in geology?

Back

Rock layers help geologists understand the history of the Earth, including the age of rocks and the events that shaped them.

Front

What does the term 'fossil record' refer to?

Back

The fossil record refers to the total number of fossils that have been discovered and the information they provide about past life on Earth.

Front

What is the difference between original remains and cast fossils?

Back

Original remains are the actual remains of an organism, while cast fossils are formed when minerals fill in the mold of an organism.