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# Orbital Motion

## Explore weightlessness, orbit, and uniform circular motion

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Orbital Motion

Describes orbital motion and weightlessness.
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## What Does "Orbit" Mean?

Describes orbital motion and weightlessness. Cover Photo: https://commons.wikimedia.org/w/index.php?title=Special:Search&limit=20&offset=20&profile=default&search=orbit+of+earth+and+moon+picture&searchToken=uup5ktd4vqhjx2civnpjzn8c#/media/File:Earth-moon.jpg
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• Interactive Simulations

## Space Station

Learn about orbits in the context of a next generation space station.
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• Interactive Simulations

## Orbital Motion

Explore the relationships between angular momentum, torque, and energy in the context of planetary orbits in our Solar System.
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• PLIX

## Orbital Motion: Satellites

Orbital Motion Interactive
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• Video

## Explain Weightlessness with Respect to Force

by Kyle Bardman //basic
Here is a helpful video explaining weightlessness as it connects to orbital motion. Courtesy of: MIT
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## Orbital Motion Quiz

Reviews the apparent weightlessness of objects in orbit and how to solve problems involving orbital velocity and period.
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• 0
• Real World Application

## A Cycle of Thrills

What are the differences between circular and elliptical orbits?
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• Real World Application

## Mercury's Orbit

Learn about how Mercury's orbit conflicted with Newtonian physics.
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• Real World Application

## Earth's Orbit

Explore the motion of heavenly bodies.
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• Study Guide