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Our Solar System

Our Solar System. Intro Video. Your Parents’ Solar System. 21 st Century Solar System. The Solar System: List of Ingredients. Ingredient Sun Jupiter Other planets Everything else. Percent of total mass: 99.8% 0.1% 0.05% 0.05%.

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Our Solar System

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  1. Our Solar System Intro Video

  2. Your Parents’ Solar System

  3. 21st Century Solar System

  4. The Solar System: List of Ingredients Ingredient Sun Jupiter Other planets Everything else Percent of total mass: 99.8% 0.1% 0.05% 0.05%

  5. Our Solar System Our solar system is made up of: • Sun • Nine planets • Their moons • Asteroids • Comets

  6. The Sun Mostly Hydrogen & Helium ~4.6 billion years old Shines because it is hot: Surface Temp ~6000 C Mostly Visible, UV & IR light Kept hot by nuclear fusion in its core: Builds Helium from Hydrogen fusion. Will shine for ~12 billion years

  7. Inner Planets The inner four “rocky” planets at the center of the solar system are: • Mercury • Venus • Earth • Mars

  8. Mercury • Planet nearest the sun • Second smallest planet • Covered with craters • Has no moons or rings • About size of Earth’s moon • Extremely hot = 450 o C & Cold @ -150

  9. Venus • Sister planet to Earth • Has no moons or rings • Hot, 464 o C Temperature, thick atmosphere • Brightest object in sky besides sun and moon (looks like bright star) • Covered with craters, volcanoes, and mountains

  10. Earth • Third planet from sun • Only planet known to have life and liquid water • Atmosphere composed of composed of Nitrogen (78%), Oxygen (21%), and other gases (1%).

  11. Mars • Fourth planet from sun • Appears as bright reddish color in the night sky • Surface features volcanoes and huge dust storms • Has 2 moons: Phobos and Deimos

  12. Outer Planets The outer planets are considered “giant gas” planets: • Jupiter • Saturn • Uranus • Neptune

  13. Jupiter • Largest planet in solar system • Brightest planet in sky • 60+ moons, 5 visible from Earth • Strong magnetic field • Giant red spot

  14. Saturn • 6th planet from sun • Beautiful set of rings • 31 moons • Largest moon, Titan, • Easily visible in the night sky

  15. Uranus • 7th planet from sun • Has a faint ring system • 27 known moons • Covered with clouds • Uranus sits on its side with the north and south poles sticking out the sides.

  16. Neptune • 8th planet from sun • Discovered through math • 7 known moons • Triton largest moon • Great Dark Spot thought to be a hole, similar to the hole in the ozone layer on Earth

  17. Outermost Dwarf Planet • Pluto, the outermost , is a small solid icy planet is smaller than the Earth's Moon.

  18. Pluto • 9th planet from sun (usually) • Never visited by spacecraft • Orbits very slowly • Moon, Charon, is very close to Pluto and about the same size

  19. Asteroids • Small bodies • Believed to be left over from the beginning of the solar system billions of years ago • 100,000 asteroids lie in belt between Mars and Jupiter • Largest asteroids have been given names

  20. Comets • Small icy bodies • Travel past the Sun • Give off gas and dust as they pass by

  21. Writing Activity • Write a paragraph about the solar system. Include 5 facts covered in this presentation.

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