View Stone Mountain Middle School
Outer Planets 21.3

08-27-15 The Outer Planets Chapter 21.3

(All of the outer planets are made of gas and have rings)


  • Is the largest planet in our Solar system; it is made of gas, mostlymostlyhydrogen and helium.

Mostly hydrogen and helium. It generates more heat than it


receives from the sun.


· It has a Great Red Spot, which is a storm that is more than


400 years old.


· Distance: It is 43.3 light minutes from the sun.


· Rotation: 9 hours, 54 minutes (10 hrs)


· Revolution: 11 years, 313 days (12 years)


· Temperature: -110C


· Gravity 236% of Earth’s



· Is the second largest planet from the sun. It is still


forming, radiation is coming from the helium falling from


its atmosphere.


· It has a ring system that has a total diameter of


272,000 Km. The rings are made of ice, dust, and rocks.


· Distance: It is 1.3 light hours away


· Rotation: 10hrs 42 minutes (13 hrs)


· Revolution: 29 years 155 days (29.5 years)


· Gravity: 92% of Earth’s


· Temp: -140C



· Is tipped over on its side, almost at a 90 degree angle. It is


believed that it was hit by a massive object long ago.


· Was discovered in 1781 by William Herschel.


· It appears to be blue-green due to hydrogen, helium, & methane gases.


· Distance: 2.7 light hours


· Rotation: 17 hrs. 12 minutes


· Revolution: 83 Years, 273 days


· Gravity: 89% of Earth’s



· Irregularities of Uranus orbit, caused scientists to look for


another body beyond it. Neptune was discovered


· It is blue due to methane gas


· It has a Great Dark Spot which is due to a storm


· It releases thermal energy to it outer layers


· It has winds that create belts of clouds.



· Distance: 4.2 light hours


· Rotation: 16 hours, 6 minutes


· Revolution: 163 years, 263 days (163.5)


· Gravity: 112% of Earth’s

Summary :

(Write summary in three or four sentences at the end of all notes pages on the topic)


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