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Published byMerry Williams Modified over 8 years ago
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Understanding Earth’s History – Ice Cores Why is ice key to our understanding of earth’s history?
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Let’s start with volcanoes…volcanoes
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Get ready for your mind to be… BLOWN!
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The Earth actually gets COLDER after big volcanic eruptions!
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How do volcanic eruptions affect the Earth’s temp? 1. Dust, ash, glass, and rock are released into the air during a volcanic eruption.
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2. These things block the sun from reaching earth!
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Clouds of ash can cover entire continents! In 2010, the Icelandic volcano Eyjafjallajokull erupted, spewing thousands of tons of ash into the air. 95,000 European flights were cancelled as a result of the eruption!
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What information do Ice Cores & Tree Rings tell us? -Tell us how the CLIMATE has changed over time
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Ice core- a sample of ice and snow that have built up over thousands of years -tell the amount of gasses in Earth’s atmosphere over time. Ice Cores
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What do ice cores tell us about the climate? Black or brown coloring- VOLCANIC ERUPTION (color caused by the ash) Yellowish color- Pollution in the air Bubbles- Carbon Dioxide (CO 2 ) is in the air (lots of bubbles means that it` was HOT!)
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