Geologic Timescale

What are the classifications from the largest to narrowest unit of time on the geologic time scale?

• era, period, eon

• eon, era, period, epoch

• era, eon, epoch, period

• eon, era, epoch, period

Tags

NGSS.MS-ESS1-4

During which periods did the first land plants, vertebrates, and insects appear?

• Triassic

• Silurian

• Cambrian

• Devonian

Tags

NGSS.MS-LS4-1

NGSS.MS-ESS2-3

NGSS.MS-LS4-2

During what period did this organism live?

• cretaceous

• permian

• devonian

• silurian

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

NGSS.MS-LS4-2

When was North America located over the equator, as shown in the picture? Expand the image to observe it carefully.

(a)  

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

​ ​ (a)   is the type of dating that allows scientists to know the exact age of a fossil or rock.

• Absolute Dating

• Relative Dating

The Cenozoic is

• an eon

• an era

• a period

• an epoch

The Phanerozoic is

• an eon

• an era

• a period

• an epoch

The epoch we are currently living in is the

• Holocene

• Quaternary

• Cambrian

• Pleistocene

The Ordovician Period spanned from

• 488-542 mya

• 444-488 mya

• 416-444 mya

Tags

NGSS.MS-ESS1-4

The Cretaceous Period spanned from

• 65.5- 146 mya

• 146-200 mya

• 23.0-65.5 mya

Tags

NGSS.MS-ESS1-4