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# Planet Orbits in the Solar System

## Describes the size and shapes of the orbits of the eight planets.

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.

## Planet Orbits in the Solar System

Looks at the size and shape of planet orbits.
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## Planet Orbits in the Solar System (MS-ESS1-2)

Looks at the size and shape of planet orbits.
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## Planet Orbits in the Solar System

Looks at the size and shape of planet orbits.
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## Planetary Orbits and Distance

Photo Credit: By NikoLang - Own work (Screenshot), GPL, https://commons.wikimedia.org/w/index.php?curid=850856 Looks at the size and shape of planet orbits.
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• Video

## Scaling the Solar System

The unit of measurement used when speaking about the solar system, the astronomical unit, is described in terms of distances between the planets, the sun, and other planets.
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• Activity

## How Old Are You?

Students calculate their age according to planetary orbits.
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## Planet Orbits in the Solar System Quiz

Quiz on Planet Orbits in the Solar System
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• Critical Thinking

## Planet Orbits in the Solar System Discussion Questions

A list of student-submitted discussion questions for Planet Orbits in the Solar System.
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• Real World Application

## Flat as a Pancake

Conservation of angular momentum causes particles in 3-dimensional space to flatten out. Solar systems, galaxies and black hole accretion discs are examples in the universe.
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• Real World Application

## Attacking Asteroids

Students will explore the potential frequency and danger of asteroids hitting the Earth as well as other planets in the solar system.
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• Real World Application

## Syzygy

Discover the meaning of this unusual word and what happens when the planets align.
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• Study Guide