Study

All about STARS

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  • What is a complex system of garments that allow astronauts to work safely outside their spacecraft called?
    Space suit
  • Where are blue stars found on an HR diagram?
    At the left.
  • Which region of the sun produces all the heat and light we receive on Earth?
    The core
  • What is a space walk?
    An activity in which an astronaut moves around and does work outside a spacecraft while in space.
  • What are tiny meteoroids traveling fast enough to damage spacecraft called; micrometeoroids or vacuum?
    Micrometeoroiods
  • On which region of the sun can you find sunspots?
    The photosphere
  • What are the relatively cool, dark spots appearing periodically in groups on the surface of the sun that are associated with strong magnetic fields?
    Sun spots
  • What is an object making a complete turn on its axis?
    Rotation
  • What is the term for how bright a star appears to us on Earth; special relativity or apparent magnitude?
    Apparent magnitude
  • What describes the true brightness of a star; absolute magnitude or true luminosity?
    Absolute magnitude
  • What is a large, bright, gaseous feature extending outward from the sun's surface, often in a loop shape?
    Prominence
  • What is heat transfer in a gas or liquid by the circulation of currents from one region to another; convection or rotation?
    Convection
  • What is a volume of space mostly empty of matter, such as oxygen, to breathe; vacuum or microgravity?
    Vacuum
  • Which star would have the greatest true brightness; Canopus- absolute magnitude of -2.50 or Rigel- absolute magnitude of -8.10?
    Rigel
  • VY Canis Majoris is a very, very large star. It is an extremely bright, cool red star. Where would it be found on the HR diagram?
    Top right
  • What is a sudden eruption of magnetic energy released on or near the surface of the sun?
    Solar Flare
  • What variable is on the X-axis of the Hertzsprung-Russell diagram?
    Temperature
  • How do astronomers use our sun to measure other stars?
    It's solar mass
  • About how long does it take light to travel from the sun to earth?
    8 minutes
  • Describe microgravity.
    The almost complete absence of gravity that can only be found in space.
  • What is the luminous star composed mainly of hydrogen and helium around which Earth and other planets revolve?
    The sun
  • What is a person trained to be a part of a spacecraft crew called?
    Astronaut