Phanerozoic eon

Dinosaurs were living during Mesozoic, Triassic and Jurassic eras and eventually became extinct during the Cretaceous period. In all of these eras dinosaur fossils were found. What does this evidence tell scientists about how natural processes have changed Earth over time?

• Dinosaurs fossils in varying rock layers show that as the population changed they were fossilized in different rock layers by Earth’s natural processes.

• Dinosaur fossils take a long time to form and demonstrate how long the natural processes take to change the

  Earth

• Dinosaur fossils are formed within layers of sedimentary rock that were laid down by natural Earth processes which

  no longer occur today showing how Earth has changed.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

NGSS.MS-LS4-1

Dinosaurs were the dominant animal group in the ...................... era.

• Cenozoic

• Paleozoic

• Mesozoic

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

Life started in the Phanerozoic eon, around 542 millions years ago.

• TRUE

• FALSE

Tags

NGSS.MS-LS4-1

The first animals (living things) appeared on the oceans and seas.

• TRUE

• FALSE

Tags

NGSS.MS-LS4-1

......... was a supercontinent, which has separated to become the continents we know today.

• Pangea

• Competition

• Era

• Mesozoic

• Hadean eon

Tags

NGSS.HS-ESS1-5

A period is divided into eras.

• TRUE

• FALSE

Tags

NGSS.MS-ESS1-4

A timeline of earth's past is called the

• Geologic Time scale

• period

• radioactive decay

Tags

NGSS.MS-ESS1-4

Arrange the time units in the geologic time scale starting from longest to shortest

• eon, epoch, era, period

• eon, era, period, epoch

• epoch, period, eon, period

Tags

NGSS.MS-ESS1-4

Geologic time scale is divided into

• equal units

• unequal units

Tags

NGSS.MS-ESS1-4

The extinction of many species on earth within a short period of time.

• extinction

• mass extinction

• land bridge

Tags

NGSS.MS-LS4-1