Journey Through Time Geologic Time Scale Passages

The ​ ​ (a)   showcases the major events in Earth's history.

• geologic time scale
• lunar-based calendar

Tags

NGSS.MS-ESS1-4

What significant event marks the beginning of the Hadean Eon?

• The formation of the first oceans

• The cooling of Earth's surface

• The formation of planet Earth

• The formation of prokaryotes (single-cell organisms)

During the Proterozoic Eon, ​ (a)   appeared.

• multicellular life
• dinosaurs
• land plants
• oceans

Tags

NGSS.MS-LS4-1

What significant event took place during the Paleozoic Era?

• Rise of Mammals

• The Cambrian Explosion

• Reptile dominance

• Large extinction event

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

The event that marks the beginning of the Cenozoic Era is​ (a)  

• dinosaur extinction
• first mammals form
• ecosystems develop
• land plants appear

Tags

NGSS.MS-ESS1-4

What does the Geologic Time Scale teach us about Earth?

• It is a static (unchanging) environment

• It is dynamic (constantly changing)

• It has always been the same

• It only changes during extinction events

Tags

NGSS.MS-ESS1-4