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  1. #1
    anniegirl's Avatar
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    astronomy hw help!!!!! earth-centered Vs. sun-centered?

    Some of these observations are false, while others are true

    1. we sometimes see a cresent jupiter (false)
    2. a planet beyond saturn rises in the west, sets in the east (false)
    3. stars circle daily around north or south celestial poles
    4. positions of nearby stars shift slightly back and forth each year
    5. moon rises in the east, sets in the west everyday
    6.a distant galaxy rises in the east and sets in the west everyday
    7. mercury goes through a full cycle of phases
    (the remaining were true)

    The task is to classify each of the following observations according to whether it is consistent with only the Earth-centered model, only the Sun-centered model, both models, or neither model.
    like where do each one belongs at either the
    earth centered
    sun centered
    both
    or neither

  2. #2
    luvlaketahoe's Avatar
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    1. could only be true in the Earth-centered model
    2. Neither model
    3. True in both models
    4. Both
    5. Both
    6. Both
    7. True only in Earth-centered

  3. #3
    1. False for both earth and sun centered
    2. False for earth centered, not applicable for sun centered
    3. True for earth centered, not applicable for sun centered
    4. True for earth centered ( Google stellar parallax)
    5. True for Earth centered
    6. True for Earth-centered
    7. True for Earth centered, although full Mercury is hidden by the sun when Mercury is in superior conjunction like it was last week for obsrvers on the Earth

  4. #4
    luvlaketahoe's Avatar
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    1. could only be true in the Earth-centered model
    2. Neither model
    3. True in both models
    4. Both
    5. Both
    6. Both
    7. True only in Earth-centered

  5. #5
    luvlaketahoe's Avatar
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    1. could only be true in the Earth-centered model
    2. Neither model
    3. True in both models
    4. Both
    5. Both
    6. Both
    7. True only in Earth-centered

  6. #6
    luvlaketahoe's Avatar
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    1. could only be true in the Earth-centered model
    2. Neither model
    3. True in both models
    4. Both
    5. Both
    6. Both
    7. True only in Earth-centered

 

 

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