Four ways to understand the Earth's age

Geologically speaking with reference to the entire history of the earth, the dinosaurs went extinct

• Shortly after the formation of Earth

• In the first billion years of Earth’s history

• In the most recent 2% of the history of Earth

• Before the first fish formed

Tags

NGSS.MS-LS4-1

Relative to the percent of time dominating the surface of Earth which organisms have the longest reign?

• Dinosaurs

• Mammals

• Prokaryotic bacteria

• Humans

Tags

NGSS.MS-LS4-1

The Earth is ________ years old.

• 6,000

• 4,600,000,000

• 4,600,000

• 500,000

Tags

NGSS.MS-ESS1-4

100,000 years in the geologic history of Earth would be considered

• An extremely long time

• A very small amount of time

• Half of earth's history

• Most of earth's history

Tags

NGSS.MS-ESS1-4

Understanding geologic time is significant because it helps us

• Understand humans’ impact on our environment

• Understand the evolution of organisms over time

• Understand the possibility for life on other planets

• Understand how organisms evolve

• All of the above

Tags

NGSS.MS-ESS1-4

NGSS.MS-LS4-1

Which organism first dominated Earth?

• Dinosaurs

• Insects

• Plants

• Fish

• Bacteria

The dinosaurs ruled the Earth from 250 to 65 million years ago, for a total of 185 million years. If the average human lifespan is 80 years how many generations of humans would it take to equal that amount of time?

• 5,532 generations

• 2,312,500 generations

• 25,533 generations

• 132 generations