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Carlos Maya-ESPS
1C Astronomy Vocab-ESPS
Term | Definition |
---|---|
Convective Zone | The region of the sun's interior that is between the radiative zone and the photo sphere and in which energy is carried upward by convection. |
Radiative Zone | A very dense region of the sun in which the atoms are so closely packed that light can take millions of years to pass through. |
Photosphere | The inner layer of the sun's atmosphere. |
Chromosphere | A gaseous layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun. |
Corona | The outermost layer of the sun's atmosphere. |
Sunspot | A dark area of gas on the sun's surface that is cooler than surrounding gases. |
Prominence | A loop of gas that protrudes from the sun's surface, linking parts of sunspot regions. |
Solar Flare | An eruption of gas from the sun's surface that occurs when the loops in sunspot regions suddenly connect. |
Coronal mass ejection | A large explosion of matter and energy from the Sun. |
Kepler's Law | A theory compromised of laws that describe the planetary movement around the sun. |
Eccentricity | Something or someone strange and unconventional behavior. |
Elliptical Orbit | An oval shaped path, used to describe the shape of the Earth's orbit around the Sun. |
Formula for eccentricity | The distance between foci divided by length of major axis. |
Solar System | Sun, planets, and all the other objects that revolve around the sun |
Astronomy | The study of the moon, stars, and other objects in space |
HR Diagram | Classifies stars by temperature and absolute brightness |
Nebula | A large cloud of dust and gas in space, the beginning of a star. |
Stellar Spectra | based on absorption lines: O B A F G K M; surface temperature sequence (hot to cool) |
Red Giant | A star that expands and cools once it runs out of hydrogen fuel |
White Dwarf | Stage in which a star has used up its helium and its outer layers escape into space, leaving behind a hot, dense core that contracts |