GED Science: Eclipses

Certain positions of the sun, moon and earth relative to each other can cause eclipses to occur.  Eclipses are a blocking of one object by another object.  Eclipses can be partial, with only part of an object blocked, or total, when the entire object blocked.  When the sun is blocked from our view, the eclipse is called a solar eclipse.  Solar eclipses happen when the moon crosses between the sun and the earth, blocking the sun’s light from reaching earth.  A solar eclipse is shown in the diagram below:


Lunar eclipses occur when the earth comes between the sun and the moon, blocking the sun from illuminating the moon.  A lunar eclipse is shown in the diagram below:



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