Introducing 

Prezi AI.

Your new presentation assistant.

Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.

Loading…
Transcript

Which is longer an

era or a period?

What is the longest

time span?

What are divisions

based on?

Rock Layers

Younger rock layers are on top...how do I

know this?

A change in rock layers is called what?

Fossils

What are the 6 types of fossils?

What makes a fossil

a good index fossil?

How do scientists use index fossils?

Mass Extinction

What do scientists think

caused the mass

extinctions?

Explain the idea of

natural selection...

Who developed the idea

of natural selection?

What is the gradual change of a species

over time called?

Evolution

Weathering

Give an example of

mechanical weathering...

Give an example of

chemical weathering...

Geologic Time Scale

Learn more about creating dynamic, engaging presentations with Prezi