Exercise
Atmospheric History and Ice Cores
Discover how ice cores provide evidence of Earth's atmospheric history and historical climate changes.
Questions
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MultiChoice
What do scientists drill from ice sheets to study ancient atmospheric gas composition?
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MultiChoice
What feature inside ice cores preserves samples of Earth's ancient air?
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MultiChoice
Where are the thickest ancient ice sheets located?
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MultiChoice
Ice core records allow scientists to measure atmosphere composition going back how far?
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MultiChoice
What relationship between CO2 and global temperature is shown in ice core data?
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MultiChoice
What biological process first added oxygen to Earth's early atmosphere billions of years ago?
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MultiChoice
Besides ice cores, what natural proxy record shows annual climate variations through wood growth?
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MultiChoice
What microscopic plant remains in lake sediments tell scientists about past climate vegetation?
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MultiChoice
What natural geological events shoot ash and sulfur dioxide gas high into the stratosphere?
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MultiChoice
Major volcanic eruptions typically cause what temporary effect on Earth's climate?
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MultiChoice
How do modern CO2 levels compare to the highest levels in ice core history?
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MultiChoice
Earth's early atmosphere billions of years ago contained mostly which gases from volcanic outgassing?