E4-1 Mass Extinctions - Connection

What is a mass extinction?

• An event where a large percentage of Earth's species die out in a short period of time

• A gradual process of species dying out over millions of years

• A phenomenon where only plants go extinct

• A rare occurrence with no impact on Earth's history

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Which mass extinction is known as the 'Great Dying'?

• Ordovician-Silurian extinction

• Permian-Triassic extinction

• Cretaceous-Paleogene extinction

• Late Devonian extinction

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What caused the Cretaceous-Paleogene extinction?

• Asteroid impact and volcanic activity

• Climate cooling and sea level changes

• Changes in ocean oxygen levels

• Rising carbon dioxide levels

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How did reptiles become dominant on Earth?

• After the Permian-Triassic extinction

• Due to the asteroid impact during the Cretaceous-Paleogene extinction

• Because of volcanic eruptions during the Triassic-Jurassic extinction

• After the Late Devonian extinction

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Why is studying mass extinctions important?

• To predict how current environmental changes might affect life

• To understand why dinosaurs went extinct

• To learn about volcanic eruptions

• To study asteroid impacts

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What happened after the Cretaceous-Paleogene extinction?

• Mammals flourished, paving the way for humans

• Reptiles became dominant

• Dinosaurs evolved into birds

• Plants stopped evolving

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Which event is considered the largest mass extinction in Earth’s history?

• Cretaceous-Paleogene extinction

• Permian extinction

• Triassic extinction

• Ordovician extinction

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What was the main cause of the Permian mass extinction?

• Meteor impact

• Siberian Traps volcanic eruptions

• Formation of the moon

• Accretion of asteroids

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Explain why the Siberian Traps eruption was so devastating to life during the Permian extinction.

• It released large amounts of greenhouse gases, causing climate change

• It increased oxygen levels

• It formed banded iron formations

• It led to the formation of the moon

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Explain how volcanic eruptions can cause mass extinctions.

• By increasing oxygen levels

• By releasing gases that change the climate and reduce sunlight

• By forming stromatolites

• By causing accretion

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