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Seasons&Moon Vocab

Seasons and Moon Phases Vocab

Seasons Each of the four divisions of the year (spring, summer, autumn, and winter) marked by particular weather patterns and daylight hours.
Direct Light Illumination on a subject or area that goes directly from the front of the luminaire in a straight line to the subject.
Indirect Light Illumination on a subject or area that goes indirectly from the some part of the luminaire in a straight line to the subject.
Earth's tilt 23 degrees, the difference between the angle of rotation of the earth and the orbit of the earth.
Orbit The curved path of a celestial object or spacecraft around a star, planet, or moon, esp. a periodic elliptical revolution.
Revolution(revolve) The motion of an object around a point, especially around another object or a center of mass.
Axis An imaginary line about which a body rotates: "the earth revolves on its axis once every 24 hours".
Rotation(rotate) The action of rotating around an axis or center: "in the same direction as the earth's rotation".
Solstice Either of the two times in the year, the summer solstice and the winter solstice, when the sun reaches its highest or lowest point in the sky at noon, marked by the longest and shortest days
Equinox The time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length (about September 22 and March 20)
Moon Phases (space view) Half of the moon is always dark and half is always bright.
Moon Phases (Earth view) It changes over time, as the revolution of Earth gives different amount of light to moon, or seems to, in a specific area
Gibbous Having the observable illuminated part greater than a semicircle and less than a circle.
Crescent The curved sickle shape of the waxing or waning moon.
Waxing Have a progressively larger part of its visible surface illuminated, increasing its apparent size.
Waning Have a progressively smaller part of its visible surface illuminated, so that it appears to decrease in size.
Created by: k0908375