• Eclipses

    Eclipses

    Objective:

    I can demonstrate the relative positions of the sun, Earth, and moon during the moon phases and to observe the changing appearance of the moon as seen on Earth. Learning Standard: ES 9. Describe lunar and solar eclipses, the observed moon phases, and tides. Relate them to the relative positions of the earth, moon, and sun.

    Learning Standard:

    ES 9.  Describe lunar and solar eclipses, the observed moon phases, and tides. Relate them to the relative positions of the earth, moon, and sun.

    Eclipses:

    Lunar Eclipse

    i. Earth is between the sun and moon
    ii. Earth’s shadow is cast on the moon
    iii. Moon appears red due to light from the sun bending through the Earth’s atmosphere
    iv. Occurs during a full moon phase
    vi. Everyone on the nighttime side of Earth can see the lunar eclipse
    vii.If the moon falls into the umbra of the shadow, there is a total lunar eclipse
    viii. If the moon falls into the penumbra of the shadow, there is a partial lunar eclipse

    Source:  http://www.rugusavay.com/lunar-eclipse-moon-wallpapers/

    Solar Eclipse

    i. Moon is between the Sun and Earth
    ii. Moon’s shadow is cast on Earth
    iii. Occurs during a new moon phase
    iv. Only seen during the day
    v. Anyone in the umbra of the shadow sees a total solar eclipse
    vi. Anyone in the penumbra of the shadow sees a partial solar eclipse
    vii. Anyone outside the shadow sees NO eclipse

    See Figure B

    Solar Eclipse Geometry
    (Figure B)  Source:  http://www.mreclipse.com/Special/SEprimer.html


    Source:  http://www.nikonusa.com/en/Learn-And-Explore/Article/h20zakgu/How-to-Photograph-a-Solar-Eclipse.html


    Source:  http://lpb.fieldofscience.com/2009/07/solar-eclipses-viewed-from-space.html

    Lunar eclipses do not occur during every full moon and solar eclipses do not occur during every new moon

    i. The moon does not orbit earth in one plane (sometimes it passes at a point higher or lower than other times)
    See Figure C


    (Figure C)  Source:  http://astronomy.nju.edu.cn/~lixd/GA/AT4/AT401/HTML/AT40104.htm

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