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psychical science

QuestionAnswer
scale API gravity is thus an inverse measure of the relative density of a petroleum liquid and the density of water, but it is used to compare
scale model A scale model is most generally a physical representation of an object, which maintains accurate relationships between all important aspects of the model, although absolute values of the original properties need not be preserved.
orbital radius it is the distance between what an object is orbiting around and the object itself in any given point
waxing (of the moon between new and full) have a progressively larger part of its visible surface illuminated, increasing its apparent size.
waning of the moon) have a progressively smaller part of its visible surface illuminated, so that it appears to decrease in size.
crescent the curved sickle shape of the waxing or waning moon.
gibbous (of the moon) having the observable illuminated part greater than a semicircle and less than a circle.
full moon he phase of the moon in which its whole disk is illuminated .
new moon the phase of the moon when it is in conjunction with the sun and invisible from earth, or shortly thereafter when it appears as a slender crescent.
lunar phase The lunar phase or phase of the moon is the shape of the illuminated (sunlit) portion of the Moon as seen by an observer, usually on Earth.
Created by: andrew1234