1. Uranus Amy Gerrelts Tyler Schmidt Madison Santee Katie Bandy (maybe)

2. Pre-Assessment  What spacecraft discovered Uranus?  Uranus is the ___ planet.  True/False: The blue color of Uranus comes from the hydrogen in the atmosphere.  How many moons does Uranus have and what are the different groups?  Which of these is not true about Uranus?  Uranus has 13 rings  It was discovered in 1781  All of it’s major moons are made completely out of rock and ice  Lacks a solid, defined surface

3. Characteristic  Size  Radius- 15,759 miles (25,362 km)  Mass 86.81E24 kg  Surface area 3.121 billion sq. miles  http://www.youtube.com/watch?v=G7f1nu wRq_E http://www.youtube.com/watch?v=G7f1nu wRq_E

4. Surface  Featureless  Lacks a solid defined surface  Gravitation is about 90%of that on earth  Second less dense  Core contains icy materials  Core temperature is very low (9,000 F)  http://www.youtube.com/watch?v=EGb GlpeMyJk http://www.youtube.com/watch?v=EGb GlpeMyJk

5. Atmosphere  Heavily dominated by ice  Hydrogen and helium  The “Blue” essence is a result of methane gas absorbing light

6. Levels of atmosphere  Troposphere-  Densest  Temp. range- -243 degrees F to -370 degrees F  Layers of clouds containing: Water clouds(least pressure), ammonium hydrosulfide clouds, thin methane cloud

7. Stratosphere  Contains ethane smog contributing to the “dull” appearance of the planet  Acetylene and methane are also present

8. Thermosphere and Corona  reach temperatures of 1,070 F  Extending twice as far from the center of the planet as its surface, the far-reaching outer layers are unique to Uranus.  They create a drag on the ring particles that orbit the planet.

9. Uranus' rings  13 known rings: 1986U2R, 6, 5, 4, Alpha, Beta, Eta, Gamma, Delta, Lambda, Epsilon, Nu and Mu  Some of the larger rings are surrounded by belts of fine dust  http://www.youtube.com/watch?v=P8UcDnBhCkw http://www.youtube.com/watch?v=P8UcDnBhCkw

10. Moons  27 moons  All named by characters from Shakespeare's writings  Moons are divided into three groups: Inner, major and Irregular.

11. Inner Moons  Cordelia, Ophelia, Bianca, Cressida, Desdemona, Juliet, Portia, Rosalind, Cupid, Belinda, Perdita, Puck, and Mab

12. Major Moons  Miranda, Ariel, Umbriel, Titania, and Oberon  Titania is the largest of the major moons  All major moons, except Miranda are made of rock and ice. Miranda is made completely of ice.  http://www.youtube.com/watch?v=jtKKV pONlgs http://www.youtube.com/watch?v=jtKKV pONlgs

13. Irregular Moons  Francisco, Caliban, Stephano, Trinculo, Sycorax, Margaret, Prospero, Setebos, and Ferdinand

14. Gravitational Field  Tipped almost completely on it’s side thus creating a magnetic field that is strong at one pole than the other

15. Explorations  Discovered in 1781  Voyager 2- First spacecraft to visit Uranus  Discover 10 new moons, 2 rings and the strange magnetic field

16. Collisions  Knocked on side by collision shortly after creation  http://www.youtube.com/watch?v=- ElXNcGxNMo http://www.youtube.com/watch?v=- ElXNcGxNMo

17. Exit Ticket  ________ discovered Uranus.  True/False: Uranus is the 7 th planet from the sun.  What causes the “blue” color?  How many moons does Uranus have and what are the different groups?  Which of these is not true about Uranus?  Uranus has 13 rings  It was discovered in 1781  All of it’s major moons are made completely out of rock and ice  Lacks a solid, defined surface

18. Sources  http://www.space.com/18706-uranus-composition.html http://www.space.com/18706-uranus-composition.html  http://www.space.com/18708-uranus-atmosphere.html http://www.space.com/18708-uranus-atmosphere.html  http://solarsystem.nasa.gov/planets/profile.cfm?Object =Uranus&Display=Rings http://solarsystem.nasa.gov/planets/profile.cfm?Object =Uranus&Display=Rings  http://www.universetoday.com/52072/moons-of- uranus/ http://www.universetoday.com/52072/moons-of- uranus/  http://solarsystem.nasa.gov/missions/profile.cfm?Sort=Ta rget&Target=Uranus&MCode=Voyager_2 http://solarsystem.nasa.gov/missions/profile.cfm?Sort=Ta rget&Target=Uranus&MCode=Voyager_2