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Has Earth changed over deep time? How did Earth shape life and life shape Earth? What does Earth's climate in the distant past tell us about the future? Andrew H. Knoll of Harvard University, Naomi Oreskes of the University of California, San Diego, and Daniel P. Schrag of Harvard University guide...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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Published in 1998
"Here is the original Virtual Cave, devoted to the astounding variety of nature's handiwork found in solution caves, those dissolved out of solid rock by acidic waters. Most solution caves are found in carbonate rocks (limestone, dolomite, or marble) or gypsum. They may occur in sandstones, since...
Grade Level   3 4 5 6 7 8 9 10
Teaching Media Virtual Field Trips
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3
Today, oxygen, or O2, makes up about 21% of Earth's atmosphere, but for most of our planet's long history, O2 levels in the atmosphere and dissolved in the ocean were much less than they are today. In this Click and Learn, you will learn the complex biological and geological factors that have...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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4
These videos describe content featured in college-level introductory geoscience courses but may also be applicable to other disciplines and to high school curricula. These 5-6 minute videos talk about various geoscience topics like rock formation, climate change, earthquake hazards, water table, ice...
Grade Level   9 10 11 12
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