The Sun
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  • 1. The Sun By Mrs. Allen
  • 2. I. Layers of the Sun
    • The Core: The center of the sun where fusion takes place.
    • Radiation zone: energy flows from core.
    • Convection zone: energy circles back toward core and is then pushed back out by energy coming from radiation zone.
  • 3. I. Layers of the Sun
    • Photosphere: The layer from which light is given off.
    • Chromosphere: The layer that extends above the photosphere.
    • Corona: Largest layer of the suns atmosphere and extends millions of km.
  • 4. II. Parts of the Sun
    • Sunspots: Cool areas around the sun which are not permanent.
    • 1. Caused by Magnetic Fields.
    • 2. High numbers occur every 11 years.
    • 3. Occur in pairs.
    • 4. When 2 sunspots come together, prominences and flares are produced.
  • 5. II. Parts of the Sun
    • Prominences: Huge arching columns of gas.
    • Flares: Violent eruptions shooting outward from the sun at high speeds.
  • 6. III. Characteristics of the Sun
    • 99% of all the matter in our solar system is in the sun.
    • The sun is the center of the solar system.
    • The sun is a main-sequence star.
    • The sun produces energy by fusion.
    • 75% Hydrogen and 25% Helium fuse in the core.
    • Fusing means two atoms combine to form a heavier atom.
  • 7. IV. Interesting Facts
    • The sun is a G2 star.
    • The temperature of the core is 15.6 million Kelvin.
    • The sun is approximately 4.5 billion years old.
    • The sun emits a low-density stream of charged particles known as the solar wind.
    • Our sun is unique, not part of a binary system, 2 stars orbiting each other.
  • 8.