6th Topic 12: History of Earth

In relation to another object or idea

• refine
• absolute age
• fossils
• relative

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Age compared to the ages of other rocks

• infer
• relative age
• eras
• absolute age

Tags

NGSS.MS-ESS1-4

Number of years that have passed since the rock formed

• absolute age
• fossils
• infer
• radioactive dating

Tags

NGSS.MS-ESS1-4

In undisturbed horizontal sedimentary rock layers, the oldest layer is at the bottom and the youngest layer is at the top

• mass extinction
• absolute age
• law of superposition
• unconformity

Tags

NGSS.MS-ESS1-4

Preserved remains or traces of living things

• eras
• periods
• geologic time scale
• fossils

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Deduce or conclude

• eras
• infer
• refine
• amphibian

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Gap in the geologic record

• unconformity
• radioactive dating
• absolute age
• geologic time scale

Tags

NGSS.MS-ESS1-4

Atoms of one element break down to form atoms of another element

• hypothesize
• periods
• radioactive decay
• eras

Determines that absolute ages of rocks; Scientists first determine the amount of a radioactive element in a rock sample and compare that with the amount of stable element into which the radioactive element decays

• periods
• mass extinction
• radioactive decay
• radioactive dating

Tags

NGSS.HS-PS1-8

Group based on certain characteristics

• organize
• reptiles
• unconformity
• eras

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2