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Star Graphic Organizer

Earth Space Science

Grace F

on 11 March 2013

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Transcript of Star Graphic Organizer

Grace fogland Stars When a star's temperature increases to 5,000-6,000k+, it's considered medium, and its color changes to yellow. turn different colors depending on their temperature. When a star's temperature increases, its color changes. The star is considered hot and it turns blue. A star reaches its maximum temperature at 30,000k+. When a star's temperature is 3,000k+, it is considered cool, and it turns red. are organized by their temperature, color, and absolute magnitude. This system of classification is called the Hertzsprung-Russell diagram. It shows the relationship between the three. are measured in light years are powered by Heat causes nuclear fusion. Nuclear fusion starts when stars have enough mass inside of them. Hydrogen atoms are changed into helium atoms, and the energy used in that process causes the star to survive and shine. Nuclear fusion and fuels A light year is the distance a star can travel within a year. brightness differ depending on the magnitude represents how bright a star looks from planet Earth. It is affected by distance, size, and its temperature. Apparent Magnitude It is how stars look if they were the same distance away from the viewer. (It's how bright a star really is from ten parsecs (32.6 light years) away.) Absolute Magnitude looks smaller than start out as a Nebula Every star starts out as a large cloud of dust and gases. It has a lot of gravity and mass. if it has enough gravity... Protostar The mass in the nebula condenses since there is more gravity, and the gravitational energy is converted into heat energy. This process takes about 1 million years. the gravity generates heat, which leads to the next star stage Main Sequence This is the stage where the star spends most of its life. The star's heat causes nuclear fusion. Its gravitational pressure pulls the star's atoms both inwards to the center, and outwards from it due to the nuclear reaction. runs out of hydrogen atoms to turn into helium atoms its mass is huge Super Red Giant It's ginormous. (Large Red Giant) Red Giant Its core contracts because the heat that it needs to support it is gone. Its outer layers cool, and its mass becomes medium. The primary fuel for its nuclear fusion is helium to carbon, then carbon to iron. outer layers drift away from the core Planetary Nebula The nuclear fusion continues to slow. nuclear fusion stops White Dwarf The only energy it emits is heat. The core is small, about the size of Earth. all of the heat is gone Black Dwarf core contracts violently Super Nova An implosion is caused by the contraction, and is followed quickly by an explosion that gets rid of outer layers. collapses Neutron Star They are small, spin rapidly, and have a lot of density. Electrons combine with neutrons to make a strong magnetic field. loses all of its fuel Black Hole They are the smallest stars, but have the most matter. They have a ton of gravity, which they use to pull and suck things in.
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