| A | B |
|---|
| white dwarf | small, hot star dense core contracting under force of gravity |
| absolute magnitude | actual amount of light a star gives off |
| apparent magnitude | amount of star's light apparent from Earth |
| parallax | apparent shift in position of object if viewed from different places |
| constellations | groups of stars; positions seem to change as Earth moves |
| main sequence | classification of about 90 percent of stars |
| nebula | earliest stage of a star's formation |
| giant | large, cool, expanding star in which He (Helium) fuses to form carbon |
| light-year | distance light travels in one year |
| supergiant | relatively cool star; 700 times larger than our sun |
| neutron star | star in which only neutrons can exist in its core |
| black hole | object so dense not even light can escape it |
| sunspots | dark, cooler areas of the sun's surface |
| chromosphere | layer of the sun's atmosphere above the photosphere |
| corona | outer layer and largest part of sun's atmosphere |
| supernova | produced from an explosion that occurs when a star's core collapses |
| binary system | two or more stars revolving around one another |
| photosphere | lowest layer of sun's atmosphere; gives off light |
| galaxy | large group of stars, gas and dust held together by gravity |
| Big Bang Theory | scientific explanation for beginning of the universe |
| Sequence the colors of stars by temperature (hottest to coolest) | (Hottest) Blue...Yellow...Red (Coolest) |
| Life Cycle stages for stars (Birth....End Game) | Nebula...Main Sequence Star...Giant...White Dwarf |
| Milky Way galaxy is a _______ ______ galaxy | barred spiral |
| In what Galactic Cluster is our galaxy located? | The Local Group |
| What is the name of your home galaxy? | The Milky Way |
| Diameter of our Milky Way Galaxy | 100,000 light-years in diameter |
| Our sun is similar to other stars in that it .... | is a main sequence star; it is yellow in color |
| Our Sun is unlike other stars in that it... | is NOT in a binary system or star cluster |
| Doppler Shift provides evidence to support Big Bang theory because... | the Doppler Shift shows that galaxies outside of the Local Group are moving farther apart. |
| How does the sun produce energy? | In the sun's core, hydrogen atoms fuse to form helium atoms. Energy is released as a product of nuclear fusion. |
| Sunspots are associated with intense..... | magnetic fields. |
| Apparent magnitude is the... | amount of light received on Earth. |
| Absolute magnitude is the amount of light a star... | actually gives off (contrasted by amount of light apparent from Earth) |
| Solar flares are... | gases near sunspots shooting outward at high speed. |
