The Relative Age of Rocks

The ________ ___ of a rock is its age compared to the ages of other rocks.

Tags

NGSS.MS-ESS1-4

The relative age of a rock does not provide its absolute age.

• True

• False

The ________ ___ of a rock is the number of years since the rock formed.

Tags

NGSS.MS-ESS1-4

It may be impossible to know a rock's absolute age exactly.

• False

• True

Tags

NGSS.HS-ESS1-5

Geologists use the ___ __ _____________ to determine the relative ages of sedimentary rock layers.

Tags

NGSS.MS-ESS1-4

Describe how the law of superposition determines rock layers age

Tags

NGSS.MS-ESS1-4

To determine relative age, geologists also study (choose all that apply)

• intrusions

• extrusions

• faults

• gaps

Tags

NGSS.MS-ESS1-4

Lava that hardens on the surface is called an

An extrusion is always younger than the rocks below it.

• True

• False

Tags

NGSS.MS-ESS1-4

Magma cools and hardens into a mass of igneous rock called an _________.

Tags

NGSS.MS-ESS1-4