The flashcards below were created by user Bigbang on FreezingBlue Flashcards.

  1. Electromagnetic radiation
  2. Refracting telescope
    A telescope that uses lens to collect light.
  3. Reflecting telescope
    A telescope that uses mirror to collect light.
  4. Satellite
    an artificial body placed in orbit around the earth or moon or another planet in order to collect information or for communication.
  5. Orbiters
    a spacecraft designed to go into orbit, esp. one not intended to opposed to a lander.
  6. Solar nebula theory.
    A theory stating how stars and planets form from spinning and contracting of gas and dust.
  7. Star
    A celestial body made of hot gases held together by gravity.
  8. Nebula
    A cloud of gas and dust in outer space, said to be the beginning point of star formation.
  9. Protostar
    A contracting mass of gas that represents an early stage in theformation of a star.
  10. Nuclear Fusion
    The process of energy production in which the star gets so hot that hydrogen nuclei combine to form helium nuclei.
  11. Photosphere
    The surface layer of the sun.
  12. Sunspot
    an area of strong magnetic fields on the photosphere.
  13. Solar wind
    The continuous flow of charged particles from the sun that permeates the solar system.
  14. Solar flare
    A brief eruption of intense high-energy radiation from the sun's surface
  15. Importance of the sun
    The solar energy from the sun derives most process on earth that support out daily activities.
  16. Luminosity
    • Astronomy the brightness of a celestial object as it appear brightness diminished by distance.
  17. Absolute magnitude
    The brightness of a star as it would be from 32.6 light years away.
  18. Spectroscope
    An optical instrument that produces a spectrum from a narrow beam of light. Usually projecting a spectrum.
  19. Spectral lines
    A spectral line is a dark or bright line in an otherwise uniform and continuous spectrum.
  20. Hertzsprung-Russell (H-R) diagram
    A graph that compares the properties of stars.
  21. Main sequence
    A narrow band of stars on the H-R diagram that run diagonally from the upper right to the lower left.
  22. White dwarf
    A small very hot star that is typically the size of a planet.
  23. Supernova
    A massive explosion through which the entire outer portion of a star is blown off.
  24. Neutron star
    A star so dense only neutrons can exist in its core.
  25. How low mass stars evlove
    Low mass stars evolve by consuming hydrogen at  low rates allowing them to live for up to 100 billion years
  26. How intermediate-mass stars evolve
    Intermediate mass stars evolve by consuming hydrogen at  medium rates allowing them to live for up to 10 billion years.
  27. How high mass stars evolve
    High mass stars evolve by consuming hydrogen at  high rates allowing them to live shorter and die violently.
  28. Black hole
    The remnant of a supernova explosion with a gravitational field so strong that nothing can escape its pull.
Card Set:

Show Answers: