This video segment adapted from First Light explains why the highest peak in the Pacific, Mauna Kea, is an ideal site for astronomical observations. Featured are new telescope technologies that allow astronomers to explore the universe in more detail. [5:39]
Learn how Greek mathematician Eratosthenes used geometry to estimate the circumference of the Earth.
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]
Khan Academy learning modules include a Community space where users can ask questions and seek help from community members. Educators should consult with their Technology administrators to determine the use of Khan Academy learning modules in their classroom. Please review materials from external sites before sharing with students.
Describes the features of exoplanets.
A free CK-12 account is required to view all materials.
Describes the features of exoplanets.
A free CK-12 account is required to view all materials.
How the Earth was formed.
A free CK-12 account is required to view all materials.
How the moon was formed.
A free CK-12 account is required to view all materials.
Review the formation of the moon using this study giude.
A free CK-12 account is required to view all materials.
How the Sun and planets formed.
A free CK-12 account is required to view all materials.
The features of aquifers and the water table.
A free CK-12 account is required to view all materials.
The features of aquifers and the water table.
A free CK-12 account is required to view all materials.
The atmosphere provides many important functions for Earth.
A free CK-12 account is required to view all materials.
A quick review of the importance of oceans on Earth.
A free CK-12 account is required to view all materials.
Identify characteristics of the moon.
A free CK-12 account is required to view all materials.
Identify characteristics of the Moon.
A free CK-12 account is required to view all materials.
Review celestial bodies using this study guide.
A free CK-12 account is required to view all materials.
Summarizes the key points about how our understanding of the Earth's movements evolved from ancient times and what we know today. Includes some questions to check for understanding.
A free CK-12 account is required to view all materials.
Describes the causes and features of tides.
A free CK-12 account is required to view all materials.
This visualization adapted from NASA maps progressive global changes onto a rotating globe. Earth's atmosphere, hydrosphere, geosphere, and biosphere are shown to be dynamic and interconnected.
A complete, web-based, multi-media textbook covering a wide variety of Earth science concepts for middle grades.
A free CK-12 account is required to view all materials.