Word of the Day

Sunrise/Sunset

The visible rising and setting of the Sun’s upper limb across the unobstructed horizon of an observer whose eyes are 15 feet above ground level.

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    Argy-bargy

    A verbal dispute; a wrangling argument.

    Fathom

    1 fathom=2 yards=6 feet

    Semidiurnal Tide

    A tide with one high water and one low water every half day. East Coast tides, for example, are semidiurnal, with two highs and two lows during a tidal day of approximately 24 hours.

    Altostratus cloud

    Grayish or bluish layer of clouds that can obscure the Sun.

    Wallop

    A quick, rolling movement; a gallop. To boil with a continued bubbling or heaving and rolling, with noise.

    Solstice

    Summer: The Sun reaches its greatest declination (231⁄2°) north of the celestial equator. Winter: The Sun reaches its greatest declination (231⁄2°) south of the celestial equator.

    Moon’s phases

    The continually changing appearance of the Moon, caused by the different angles at which it is illuminated by the Sun. First Quarter: The right half of the Moon is illuminated, as seen from the Northern Hemisphere. Full: The Sun and the Moon are in opposition; the entire disk of the Moon is illuminated as viewed from Earth. Last Quarter: The left half of the Moon is illuminated, as seen from the Northern Hemisphere. New: The Sun and the Moon are in conjunction; the entire disk of the Moon is darkened as viewed from Earth.

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