Geology and Earth's History

Front

Rock Layers

Back

The different levels of rocks that form in the Earth over time.

Front

Charles Darwin

Back

A scientist who studied how living things change over time.

He is known for his ideas about evolution.

Front

Fossils

Back

The REMAINS or TRACES of old plants and animals that are preserved in rock.

Front

Earth's Crust

Back

The OUTERMOST layer of the Earth

Front

Geology

Back

The study of the Earth, rocks, and how the Earth changes over time

Front

Age of Earth

Back

About 4.5 billion years old

Front

Rocks

Back

A solid, naturally-formed chunk of one or more minerals.

Makes up much of the Earth's crust or outer layer

Front

Plate Tectonics

Back

The theory that Earth's outer shell is divided into several plates that move over the mantle.

Front

Minerals

Back

Natural, solid substances found in rocks with a crystal structure

Front

Pangea

Back

Millions of years ago, all the Earth's continents were joined together as one giant piece of land