Geological Time Scale

In which time period are we currently living?

• Precambrian Time

• Paleozoic Era

• Mesozoic Era

• Cenozoic Era

Tags

NGSS.MS-ESS1-4

What is the geological time scale ?

• A clock

• A calendar

• Something that divides Earths history into groups

Tags

NGSS.MS-ESS1-4

The Paleozoic, Mesozoic, and Cenozoic are divisions in the geologic time scale called ____

• centuries
• layers
• periods
• eras

Tags

NGSS.MS-ESS1-4

The following make up the 3 periods of the mesozoic era:

• Triassic

• Jurassic

• Cretaceous

• Permian

__________ is the extinction of many species on Earth within a short period of time.

• Devonian

• Half-life

• Mass extinction

• Paleozoic

_____ are the longest units of geologic time.

• Eon

• Era

• Period

• year

The shape shown in the figure below is named_____________.

• Glacial grooves

• moon

• Pangea

• Pterosaurs

_____________ were dominant Mesozoic land vertebrates that walked with legs positioned directly below their hips

• Dinosaurs

• Glacial grooves

• Pterosaurs

• Plesiosaurs

_____________ were Mesozoic flying reptiles with large, bat like wings

• Dinosaurs

• Glacial grooves

• Pterosaurs

• Plesiosaurs

______________ the two periods of Cenozoic

• Quaternary period and Tertiary period

• ordivion and devonian

• Cretaceous-Tertiary

• Triassic-Jurassic