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Transcript
The Sun By Mrs. Allen I. Layers of the Sun A. B. C. 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. I. Layers of the Sun A. B. C. 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. II. Parts of the Sun A. 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. II. Parts of the Sun A. B. Prominences: Huge arching columns of gas. Flares: Violent eruptions shooting outward from the sun at high speeds. III. Characteristics of the Sun A. B. C. D. E. F. 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. IV. Interesting Facts A. B. C. D. E. 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.