Quiz #9: Geologic History

How long have modern humans been around according to the timeline?

• 200,000 years

• 4 seconds

• 541 million years

• 360 million years

If the entire history of our planet was squeezed into one 24-hour day, at what time do humans arrive?

• 4:00 am

• 8:48 pm

• 9:38 pm

• Just before midnight

When did life on Earth begin according to the timeline provided?

• 200,000 years ago

• 541 million years ago

• 470 million years ago

• Around 3.8 billion years ago

What pattern do we see on the geologic timeline as time goes on?

• organisms become less complex

• organisms become simpler

• organisms become more complex and more diverse

• organisms become less diverse and more complex.

When did the first of Earth's major mass extinction events occur?

• 200,000 years ago

• 541 million years ago

• Around 360 million years ago

• Around 460 million years ago

How many mass extinction events are recorded in the geologic timeline?

• 0

• 2.5

• 5

• 10

What percentage of living things went extinct during the KT Extinction Event?

• 75%

• 85%

• 95%

• 60%

What event led to another mass extinction after the reign of the dinosaurs?

• An ice age

• A huge asteroid crash

• A volcanic eruption

• A global pandemic

Which era is known as the age of reptiles?

• Cenozoic Era

• Mesozoic Era

• Paleozoic Era

• Proterozoic Eon

Which period saw the first appearance of complex life forms in the ocean?

• Cambrian Period

• Jurassic Period

• Triassic Period

• Devonian Period