Quiz on Earth's History and Life

How long have modern humans been around?

• 200,000 years

• 2 million years

• 500,000 years

• 1 million years

When did simple, single-celled organisms first appear in the oceans?

• 3.8 billion years ago

• 541 million years ago

• 470 million years ago

• 200,000 years ago

What percentage of marine species were wiped out during the first major mass extinction event?

• 85%

• 50%

• 70%

• 95%

Around what time did life begin in the 24-hour day analogy of Earth's history?

• 4 am

• 6 am

• 8 am

• 10 am

When did the earliest land plants take root?

• 470 million years ago

• 541 million years ago

• 3.8 billion years ago

• 200,000 years ago

What significant event occurred around 360 million years ago?

• The first appearance of modern humans

• The land was home to early four-legged animals

• Dinosaurs first appeared

• A huge asteroid crashed into Earth

When did dinosaurs first appear on Earth?

• 500 million years ago

• 360 million years ago

• 245 million years ago

• 65 million years ago

What event is described as taking us up to 11:40 pm in the timeline?

• The appearance of modern humans

• The extinction of dinosaurs

• A huge asteroid crashing into Earth

• The first appearance of mammals

How long ago did most of the species we know today appear?

• 500 million years ago

• 245 million years ago

• 65 million years ago

• 360 million years ago

What does the document suggest about human existence in the timeline of Earth's history?

• It spans most of Earth's history

• It is a brief moment in the timeline

• It began 500 million years ago

• It is the longest period in Earth's history