(Complete Item Description)
- Abstract:
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This 7-minute video lesson looks at apsidal precession (Perihelion Precession) and Milankovitch Cycles. [Cosmology and Astronomy playlist: Lesson 75 of 85]
- Subject:
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Science and Technology
- Grade Level:
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Secondary,
Post-secondary
- Collection:
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Khan Academy
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(Complete Item Description)
- Abstract:
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This 20-minute video explains how Earth's tilt causes the seasons. [Cosmology and Astronomy playlist: Lesson 70 of 85]
- Subject:
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Science and Technology
- Grade Level:
-
Secondary,
Post-secondary
- Collection:
-
Khan Academy
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(Complete Item Description)
- Abstract:
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This 13-minute video lesson looks at how changes in Earth's rotation can effect Earth's seasons and climate. It discusses Milankovitch Cycles, Precession, and Obliquity. [Cosmology and Astronomy playlist: Lesson 71 of 85]
- Subject:
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Science and Technology
- Grade Level:
-
Secondary,
Post-secondary
- Collection:
-
Khan Academy
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(Complete Item Description)
- Abstract:
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This 2-minute video lesson looks at the causes precession and other orbital changes. [Cosmology and Astronomy playlist: Lesson 74 of 85]
- Subject:
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Science and Technology
- Grade Level:
-
Secondary,
Post-secondary
- Collection:
-
Khan Academy
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(Complete Item Description)
- Abstract:
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Milutin Milankovitch formulated a comprehensive mathematical model that calculated latitudinal differences in solar radiation upon the Earth's surface and the corresponding surface temperatures for 600,000 years prior to the year 1800. Readers can learn how Milankovitch developed his theories and how they were confirmed years later by climatic data found in deep-sea sediment cores, which indicated that major variations in climate such as ice ages were closely associated with changes in the geometry of Earth's orbit. This is part of NASA's Earth Observatory series of publications entitled "On the Shoulders of Giants," which are about scientists who revolutionized our understanding of the atmosphere, oceans, climate, and environment.
- Subject:
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Science and Technology
- Grade Level:
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Secondary
- SubTopics:
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Green
- Collection:
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NASA
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