1. Venus A. Earth Sister Planet

3. 1. Same Size, Mass, Density 2. Unlike temperature and pressure conditions 3. 0.7 A.U from the Sun

4. B. Atmosphere 1. Clouds contain sulfuric acid some water

6. 2. atmosphere 98% Carbon Dioxide

7. 3. Pressure 90 X Earth Pressure

8. a) carbon dioxide is why pressure is so great b) on Earth combined with water to form limestone

9. C. Rotation 1. 243 Earth Days to spin on axis one time 2. Retrograde ( backwards, Sun would rise in the West)

10. D. Revolution 1. 225 Earth Days 2.1 solar day=127 Earth days A solar day is when the Sun returns to the same place in the sky. Weird effect for Mercury and Venus due to rate of rotation ( spin) being close to the rate of revolution ( travel around the Sun

11. E. Temperature 1. 900 0 F 2. Should be 200 o F 3. Caused by the Greenhouse effect

13. F. Surface 1. Study by Radar 2. Found Huge mountains 3. Found Large volcanoes

14. Volcanoes?

17. Volcanoes?

18. Active? 700 miles across lightning Sulfur dioxide

19. Iceland Volcano Eyjafjallajokull 4-20-10 had lightning Maybe Venus has active volcanoes http://abcnews.go.com/GMA/video /pronounce-eyjafjallajokull- 10392613

20. 4. Long Trough a) 900 miles long b) like East Africa rift valley on Earth

21. G. Unmanned Spacecraft 1. USA Mariner and Pioneer

22. a) only orbiters b) 5 c) observe clouds and atmosphere

24. 2. USSR Venera 1-16 a) orbiters b) landed 8 times

25. c) destroyed by high temperature and pressure

26. d) took pressure & temperature measurements e) took pictures

29. f) Magellan 1989 Radar maps of planet Picture on next page is not true color. Radar has no color!

31. Venus Express ESA project ( European Space Agency) Launched on 9 November 2005 arrived five-month journey Double Vortex at Venus South pole

32. H. Information from spacecraft 1. Atmosphere a) Winds 200mph but only 4 mph on surface

35. b) like our jet stream Over wider area on Venus

36. c) convection cells Boiling phenomena 1 cell /hemisphere earth has 3

38. Venus Transit 2004- Venus crossed in front of the Sun Next one was June 6, 2012 Next one 2117

39. My Picture from 2004

41. My Pictures from Venus Transit 2012

42. H-alpha filter My Pictures from Venus Transit 2012