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Ch. 20 EarthMoonSun

Ch. 20 Earth Moon Sun

QuestionAnswer
Axis of Rotation an imaginary line about which a turning body, such as Earth, rotates
Revolution The motion of a body around another, such as Earth in its orbit around the Sun; the time it takes an object to go around once
Season one part of a pattern of temperature changes and other weather trends over the course of a year
Equinox a position & time in which sunlight shines equally on the Northern Hemisphere & the Southern Hemisphere; a time of year when daylight & darkness are nearly equal for most of Earth
Solstice a position & time during which one hemisphere gets its maximum area of sunlight, while the other hemisphere gets its minimum amount; the time of year when days are either longest or shortest, & the angle of sunlight reaches its maximum or minimum
Mare a large, dark plain of soldified lava on the Moon
Eclipse an event during which one object in space casts a shadow onto another
Umbra the dark, central region of a shadow, such as the cone of complete shadow cast by an object
Penumbra a region of lighter shadow that may surround an umbra; the spreading cone of lighter shadow cast by a space object
Ellipse An oval or flattened circle
Created by: jalanda.goff
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