2. THE SUN AND OUR SOLAR SYSTEM By: Larissa Petzoldt Fall 2011

3. What is the Sun?  A Star orbited by Earth  A hydrogen Sphere 1.4 million km in diameter  The Center of the Solar System

4. What is the Sun Made of? Element one Hydrogen 74% Element two Helium 24% Element three A Mix 2% of: Iron Nickel Oxygen

5. Layers of the Sun  Inside Out  First layer Core  Second layer Radiation Zone  Third Layer Convection zone  Fourth layer Photosphere Apparent Surface  Fifth layer Chromosphere  Sixth layer Corona Rays

6. Temperature, Size, and Facts The sun is about 5800 K Not the hottest star Temp 1.4 Km in Diameter 109 times the size of the Earth You could fit 1.3 million Earth’s inside the sun Size Becoming 10% more luminous every billion years Light takes about 8 mins to reach Earth Facts

7. We have the Right Kind of Sun!  We have Light  Gives us Energy  Gives us Heat Without The Sun:  Everything would be dark  We would have no Energy  The Earth would Freeze Life on Earth Would NOT Exist!! Because We Have the Sun...What if we did NOT have the sun?

8. The solar system has: 8 planets, 4 dwarf planets, moons, asteroids, comets, and is at least 4.6 billion years old. Our Solar System

9. Two Groups of Planets  Mercury  Venus  Earth  Mars  Jupiter  Saturn  Uranus  Neptune InnerOuter *The Asteroid Belt is what separates the two groups*

10. Inner Planets  Mercury  Closest to the sun  Year = 88days  Diameter = 4878km  No Atmosphere  Venus  Year = 224.68 days  Diameter = 12104km  Earth  Our Planet  Year = 365 days  Diameter = 12, 713.5 km  Mars  Year = 686.95 days  Diameter = 6796 km  Huge volcano, craters, and canyons

11. Outer Planets  Jupiter  Year = 11.87 earth years  Diameter = 142,900 km  Very large moons  Great red spot  Gas planet  Saturn  Year = 29.46 earth years  Diameter = 129,660 km  Has the largest moon- Titan  Uranus  Year = 84.01 earth years  Diameter = 51,118 km  No internal heat source  Ne ptune  Year = 164.8 earth years  Diameter = 49,500 km  Great dark spot

12. Other Things in Solar System  Dwarf Planets  Pluto  Haumea  Ceres  Makemake  Eris  Satellites (or moons)  Small body Orbiting a larger body  Our satellite is 384,000 km away  Asteroids  Rocky or metallic interplanetary body  Larger than 100m in diameter  Comets  Ice-rich interplanetary bodies that orbit the sun  Dry, methane

13. References  http://www.universetoday.com/17982/10- interesting-facts-about-the-sun/  Dr. Kennon (Science for Teachers Class)