Space Chapter 7

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  1. Celestial Object
    Any object that exists in space. i.e. moon, planets, stars.
  2. Astronomer
    A scientist who studies astronomy.
  3. Revolution
  4. Rotation
  5. Constellation
    A group of stars that form a distinctive pattern in the sky
  6. Light-year
    the distance that light travels in one year. 9.5 X 10*12 km
  7. Absolute Magnitude
    The magnitude of a star that we observe if the star were 32.6 light years from Earth
  8. Apparent Magnitude
    The brightness of a star as seen on Earth
  9. Asterism
    A smaller group of stars that form a pattern within constellations or multiple constellations.
  10. Circumpolar
  11. Pointer Stars
    • They are the two stars in the big dipper when followed lead to Polaris or the North Star
    • Polaris_map.JPG
  12. Zenith
  13. Tides
  14. Phases of the Moon
    • The monthly progressions in the moons appearance that results in different portions of the moon sunlit side being visible from Earth
    • Image Upload 1
  15. Lunar Eclipse
    When the full moon passes into Earth's shadow.
  16. Solar Eclipse
  17. Why do we have seasons?
  18. Planets (include inner planets & outer planets)
    • an object that orbits one or more stars and is not a star itself. is spherical and doesn't share an orbit with another object.
    • The inner planets include Mercury, Venus, Earth, Mars.
    • Then an asteroid belt separates them.
    • Jupiter, Saturn, Uranus, and Neptune are the outer planets.
  19. Solar Panels
  20. Retrograde motion
  21. Astronomical unit
    The average distance between Earth and the Sun about 150 x 10*6. Also know as AU.
  22. Orbital Radius
    The average distance between the sun and the object that is orbiting it.
  23. Geocentric model
    Model of the solar system stating that the Earth is the center of all planetary motion. With the planets and sun moving in perfect circles.
  24. Heliocentric Model
    Model of the solar system that in which the Sun is the center and all the planets revolve around it.
  25. Comet
    An object that is made up rocky material,ice, and gas. It comes from Kuiper Belt and Oort Cloud.
  26. Asteroid
    It is an object in space and ranges in a speck of sand to 500 km. They usually come from the asteroid belt between Mars and Jupiter.
  27. Meteoroid
    a piece of rock moving through space
  28. Meteor
    A meteoroid that hits the earth's atmosphere and burns up.
  29. Meteorite
    Is a meteor that is large enough to pass through the earth's atmosphere and reach the ground with being totally burned up
  30. Trans-Neptunian object
Card Set:
Space Chapter 7
2016-01-04 23:15:44
space astronomy
Ms.Day Gr.9 Space unit Chapter 7
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