Earth Changing Over Time

A chart that divides Earth's history into different time units based on changes in the rocks and fossils

• Epochs and Erosion

• Geologic Time Scale

• Ryan Reynolds

• Mission to Mars

Tags

NGSS.MS-ESS1-4

States that each rock layer or strata is older than the one above it.

• Law of Rocks

• Plate Tectonics

• Law of Superposition

• The Rock

Tags

NGSS.MS-ESS1-4

A crack in the Earth's lithosphere that occurs between two pieces of rock. Rock pieces can move and then earthquakes can occur if the movement pushes those rock pieces into or past one another.

• Fault

• Continental

• Flatulence

• Mantle

Tags

NGSS.MS-ESS3-2

Beneath the surface, magma may push into bodies of rock. There, the magma cools and hardens into a mass of igneous rock called an

• Ant Man

• Eon

• Encephalitis

• Intrusion

Tags

NGSS.MS-ESS2-1

Refers to magma reaching the surface of the Earth through a volcano or volcanic vent. It simply means that molten rock from within the Earth is extruded onto the surface and exposed to the air.

• Intrusion

• Extrusion

• Copper

• Midtrusion

Refers to the approximate age of a specific rock layer. It is determined by comparing its position to other rock layers.

• Dead Pool

• Relative Age

• Rock Layers

• Geology

Tags

NGSS.MS-ESS1-4

The number of years since the rock has formed. It is based on the radioactive decay of isotopes of certain elements, such as carbon-14 and potassium-40.

• Absolute Age

• Unconformity

• Thor

• Sedimentary Layers

Tags

NGSS.MS-ESS1-4

A method that utilizes radioactive elements to calculate the age in years of geologic materials, such as rocks and minerals.

• Convergent

• Magma

• Weathering

• Radioactive Dating

Tags

NGSS.HS-PS1-8

The idea that Earth has always changed in uniform ways and that the present is the key to the past.

• Uniformitarianism

• Unconformity

• Correlation

• Fault

Types of matter that have specific chemical and physical properties and cannot be broken down into other substances. They are distinguished by a unique atomic number.

• Structure

• Lithosphere

• Inclusion

• Element