History of the Earth Vocab

The age of a rock compared to the ages of other rocks

Tags

NGSS.MS-ESS1-4

The age of a rock given as the number of years since it’s formed

The geologic principle that states that in horizontal layers of sedimentary rock, each layer is older than the layer above it and younger than the layer below it

Tags

NGSS.MS-ESS1-4

The preserved remains or traces of an organism that lived in the past

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

A gap in the geologic record that shows where rock layers have been lost due to erosion

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

The process in which the nuclei of radioactive elements break down, releasing fast-moving particles and energy

Tags

NGSS.HS-PS1-8

The process of determining the age of an object using the half-life of one or more radioactive isotopes

A record of the geologic events and life forms in Earth’s History

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

One of 3 long units of time between the Precambrian period and the present

Tags

NGSS.MS-ESS1-4

One of the units of geologic time into which geologists divide eras

Tags

NGSS.MS-ESS1-4