Dating Rock Layers & Fossils

Front

What type of rock forms from extreme heat and pressure?

Back

Metamorphic rock forms from extreme heat and pressure.

Front

What does the Geologic Time Scale represent?

Back

The Geologic Time Scale is a record of the known history of rocks and fossils.

Front

What does the Law of Cross-Cutting Relationships state?

Back

An igneous intrusion or a fault is always younger than the rock layers it cuts across.

Front

What type of rock results from melting and cooling of magma?

Back

Igneous rock results from melting and cooling of magma.

Front

What does the Law of Original Horizontality state?

Back

All sedimentary rocks are deposited horizontally.

Front

What are sedimentary rocks primarily composed of?

Back

Sedimentary rocks are primarily composed of particles from other rocks and organic materials.

Front

What is the process of forming sedimentary rocks called?

Back

The process of forming sedimentary rocks is called lithification.

Front

What is an example of an igneous rock?

Back

An example of an igneous rock is granite.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

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

Front

What is fossilization?

Back

Fossilization is the process by which organic material is preserved in rock.