Video 7: Earth's Variable Climate
Student viewers see how scientists track ancient temperature and humidity records from tree rings and fossils to understand climactic change, the "Greenhouse Effect," and Earth's past climactic conditions.
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- "Detecting Past Climates" examines how researchers use tree rings and fossils, plus ice coring and other techniques, to recapture evidence of weather and climate from the past.
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"The Greenhouse Effect" relates how this phenomenon has, in the past, made our world habitable.
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"Human Induced Change" analyzes evidence for man-made changes in the climate using data on carbon dioxide, ozone, and other components of the atmosphere.
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Through the video and related activities your students will:
- Understand techniques used to obtain evidence of Earth's past climate.
- Model and observe the physical effects of a simplified greenhouse effect.
- Research and discuss the potential impact of global climate change on their own community.
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Classroom Videos: 1 2 3 4 5 6 7 8
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