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Cosmology and Astronomy: Cosmic Background Radiation (2)
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CC BY-NC-SA
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This 10-minute video lesson continues the discussion of cosmic background radiation. It looks at the redshift of the cosmic background Radiation. [Cosmology and Astronomy playlist: Lesson 12 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Detectable Civilizations in our Galaxy 1
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This 13-minute video lesson presents a framework for thinking about how many detectable civilizations are out there. [Cosmology and Astronomy playlist: Lesson 59 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Detectable Civilizations in our Galaxy 2
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CC BY-NC-SA
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This 9-minute video lesson considers why we even care about the Drake Equation. It ponders the fraction of a planet's life when a civilization might be detectable. [Cosmology and Astronomy playlist: Lesson 60 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Detectable Civilizations in our Galaxy 3
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CC BY-NC-SA
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This 7-minute video lesson reconciles the traditional Drake Equation. [Cosmology and Astronomy playlist: Lesson 61 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Detectable Civilizations in our Galaxy 4
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CC BY-NC-SA
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This 6-minute video lesson takes a shot at estimating the number of detectable civilizations in the Milky Way Galaxy. [Cosmology and Astronomy playlist: Lesson 62 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Detectable Civilizations in our Galaxy 5
Conditional Remix & Share Permitted
CC BY-NC-SA
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This 5-minute video lesson looks at more reasons why we haven't detected anything yet. [Cosmology and Astronomy playlist: Lesson 63 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Development of Agriculture and Writing
Conditional Remix & Share Permitted
CC BY-NC-SA
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This 13-minute video looks at the development of agriculture and writing in the Paleolithic and Neolithic eras of the Stone Age. [Cosmology and Astronomy playlist: Lesson 67 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Earth Formation
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CC BY-NC-SA
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This 10-minute video lesson looks at the formation of the Earth which is a the byproduct of a local supernova. [Cosmology and Astronomy playlist: Lesson 38 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Energy Inputs for Tilling a Hectare of Land
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CC BY-NC-SA
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This 14-minute video lesson considers energy consumption required for tilling land. [Cosmology and Astronomy playlist: Lesson 84 of 85]

Subject:
Anthropology
Social and Behavioral Sciences
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Firestick Farming
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CC BY-NC-SA
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This 8-minute video lesson looks at Firestick Farming and how the indigenous Australians used fire to change their environment. [Cosmology and Astronomy playlist: Lesson 76 of 85]

Subject:
Agriculture
Anthropology
Career and Technical Education
Social and Behavioral Sciences
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Four Fundamental Forces
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CC BY-NC-SA
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This 10-minute video lesson looks at the four fundamental forces: Gravity, weak interaction, electromagnetic force, and strong interaction. [Cosmology and Astronomy playlist: Lesson 15 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Galactic Collisions
Conditional Remix & Share Permitted
CC BY-NC-SA
Rating
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This 4-minute video lesson looks at the predicted collision of the Milky Way Galaxy with Andromeda (forming "Milkomeda"). [Cosmology and Astronomy playlist: Lesson 37 of 85]

Subject:
Astronomy
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Hawaiian Islands Formation
Conditional Remix & Share Permitted
CC BY-NC-SA
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This 8-minute video lesson looks at how the Hawaiian Islands were formed by a stationary hot spot under the Pacific plate. [Cosmology and Astronomy playlist: Lesson 49 of 85]

Subject:
Geology
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: How we know about the Earth's core
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CC BY-NC-SA
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This 6-minute video lesson explains how we know about the Earth's core. It shows how S-wave shadow and P-wave detection patterns give us information about the core. [Cosmology and Astronomy playlist: Lesson 55 of 85]

Subject:
Geology
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011
Cosmology and Astronomy: Human Evolution Overview
Conditional Remix & Share Permitted
CC BY-NC-SA
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This 12-minute video lesson provides an overview of evolution from from the extinction of the dinosaurs to humanity. [Cosmology and Astronomy playlist: Lesson 64 of 85]

Subject:
Anthropology
Social and Behavioral Sciences
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Khan, Salman
Date Added:
02/20/2011