Understanding Deep Time and Earth's History

How much longer is a billion seconds compared to a million seconds?

• Only a few minutes longer.

• 1000 times longer

• Approximately 10 years longer.

• About 12 days longer.

Why do humans struggle with imagining large numbers?

• It's not something taught in schools.

• Large numbers are a recent invention.

• We don't use numbers often.

• Our brains are wired for small, everyday quantities.

What is 'deep time'?

• A concept in science fiction.

• The detailed history of Earth's geology and biology.

• The study of time travel.

• A method for measuring time in space.

When did the first living organisms appear on Earth?

• About 4.5 billion years ago.

• 1 billion years ago.

• 3.8 billion years ago.

• 600 million years ago.

What event led to the first mass extinction on Earth (~2.5BYA)?

• The asteroid impact that killed the dinosaurs.

• The buildup of oxygen from cyanobacteria.

• The breakup of the supercontinent Rodinia.

• The formation of the moon.

What significant event happened 2.2 billion years ago?

• Formation of the moon.

• Appearance of the first eukaryotes.

• The Cambrian explosion.

• The first multicellular organisms.

What was the Cambrian explosion?

• The extinction of dinosaurs.

• The appearance of the first land plants.

• A sudden increase in the diversity of life.

• A geological event that shaped Earth's surface.

When did dinosaurs become extinct?

• 50 million years ago.

• 100 million years ago.

• 200 million years ago.

• 65 million years ago.

What marks the beginning of human history in the context of Earth's entire history?

• The development of agriculture.

• The invention of the wheel.

• The appearance of Australopithecus.

• The formation of the first cities.

How does the time span of recorded human history compare to the entire history of Earth?

• Recorded history covers a significant portion.

• It's less than a millimeter on the scale of Earth's history.

• It's about the same length.

• It spans the last half of Earth's history.