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Classifying Stars
8th Grade Unit 10
| Term | Definition |
|---|---|
| Black Hole | It is formed when very massive stars collapse at the end of their life cycle |
| H-R Diagram | A diagram that plots each star on a graph and measures the star's magnitude and temperature |
| Red Supergiant | A brighter and larger type of red star where the gas layers expand and the core shrinks |
| Blue Giant | A bluish star that has a high surface temperature and a diameter that is large relative to the sun |
| Supernova | The last stage of a high mass star's life. The core collapses and causes a giant explosion |
| Neutron Star | The very dense core left after a supernova |
| Protostar | A very young star that is still gathering mass from its parent molecular cloud |
| Main Sequence | What a star becomes after nuclear fusion begins. The radiate energy into space. Most stars are in this category |
| Interstellar Mediums | Areas of thinly spread gas and dust where stars are "born" |
| Nebulas | Gravity attracts the substances in interstellar mediums and become big clouds |
| Low-Mass Stars | A star with less mass that is cooler and has a reddish appearance |
| Red Giant | stars going through their death stages. It has slowly swollen up to many times its original size |
| Black Dwarf | The product of the death of a white dwarf star |
| High-Mass Stars | A star with more mass that is hotter and has a blue or white appearance |
| Planetary Nebulas | A cloud that starts forming as a star is dying |
| White Dwarf | It is formed when a low mass star runs out of fuel |
| Luminosity | The amount of energy or light a star emits |
| Magnitude | A measurement of a star's brightness |
| Apparent Magnitude | How bright an object appears from earth |
| Absolute Magnitude | A measure of a star's brightness as if it were a standard distance |