Rock Layers (Geologic Time)

Front

Dinosaurs lived in the ___________ era.

Back

Mesozoic

Front

Rock made from sediment compacted by the weight of sediment layers above are called __________ rock.

Back

sedimentary

Front

Scientists use ______ to help figure out geologic time.

Back

rock layers

Front

Paleontologists study ______.

Back

fossils

Front

The geologic time scale represents Earth's ________ year history.

Back

4.6 billion

Front

What are the three main types of rocks?

Back

Igneous, Sedimentary, Metamorphic

Front

What is the process of sediment becoming sedimentary rock called?

Back

Lithification

Front

What do fossils tell us about Earth's history?

Back

Fossils provide evidence of past life and environments.

Front

What is the significance of the Mesozoic era?

Back

It is known as the age of dinosaurs.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive rocks form inside the Earth, while extrusive rocks form on the surface.