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Cosmology and Astronomy: Beginnings of Life (1)
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This 10-minute video lesson looks at the beginnings of life on Earth. Life and photosynthesis start to thrive in the Archean Eon. [Cosmology and Astronomy playlist: Lesson 39 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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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: Potassium-Argon (K-Ar) Dating
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This 11-minute video lesson looks at Potassium-Argon (K-Ar) dating and it can be used to date very old volcanic rock and the things that might be buried in between. [Cosmology and Astronomy playlist: Lesson 79 of 85]

Subject:
Astronomy
Chemistry
Physical Science
Material Type:
Lecture
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Salman Khan
Date Added:
02/20/2011
Cost-push inflation
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A real-world example of the concepts behind the AD-AS model is the oil shocks the United States experienced in the late 1970s. In this video, we break down some of the events going on at the time and use the AD-AS model to see if our predictions using this model match what really happened. Created by Sal Khan.

Subject:
Economics
Social Science
Material Type:
Lesson
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Sal Khan
Date Added:
07/27/2021
Cost-push inflation
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CC BY-NC-SA
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A real-world example of the concepts behind the AD-AS model is the oil shocks the United States experienced in the late 1970s. In this video, we break down some of the events going on at the time and use the AD-AS model to see if our predictions using this model match what really happened. Created by Sal Khan.

Subject:
Economics
Social Science
Material Type:
Lesson
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Sal Khan
Date Added:
07/27/2021
Coulomb's Law
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Sal explains the fundamental force that causes charged particles to attract or repel each other.

Subject:
Physical Science
Physics
Material Type:
Lesson
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Sal Khan
Date Added:
07/02/2021
The Council of Nicaea
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The attempted unification of church doctrine by Constantine through the Council of Nicaea, in response to the Arian Controversy.

Subject:
History
Material Type:
Lesson
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Sal Khan
Date Added:
07/26/2021
Covalent bonds
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Covalent bonds involve the sharing of electron pairs between atoms. Electron pairs shared between atoms of equal or very similar electronegativity constitute a nonpolar covalent bond (e.g., Hƒ??H or Cƒ??H), while electrons shared between atoms of unequal electronegativity constitute a polar covalent bond (e.g., Hƒ??O). Created by Sal Khan.

Subject:
Biology
Life Science
Material Type:
Lesson
Provider:
Khan Academy
Provider Set:
Khan Academy
Author:
Sal Khan
Date Added:
10/30/2019