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Sci. Ch 19-21 vocab

Chapters 19 through 21 vocabulary words.

QuestionAnswer
the study of the moon,stars, and other pbjects in space Astronomy
imagenary line that passes through Earth's center and it's north and south poles, about which earth rotates Axis
the upinning motion of a planet about it's axis Rotation
the movement of an object around another object Revolution
the path of an object as it revolves around another object in space Orbit
the distance north or south from the equator Latitude
the 2days of the year on which the noon sun is directly overhead at either 23.5 degrees south or north Solstice
the 2days of the year on which neither hempisphere is tilted toward or away from the sun Equinox
the day of the year that marksthe beginning of spring in the northern hemisphere Vernal Equinox
the day of the year tha marksthe beginning of fall in the northern hemisphere... Autumnal Equinox
one of the different shapes of the moon as seen from earth Phases
the partial or toal blocking of the an object by another Eclipse
the blocking of sunlight to Earhtthat occurs when the moon is between the sun and earth Solar Eclipse
the darkest part of a shadow Umbra
the part of a shadow surrounding the darkest part Penumbra
the blocking of sunlightto the moon that occurs when Earth is directly between the sun and mooon Lunar Eclipse
the daily rise and fall of earht;s watera or shore Tides
the attractive force between 2 objects Gravirty
any object that revolves arounf another object in space Satellite
the orbitof a satellite that revolvesaround earth at the same rae that earht rotates Geosynchronis Orbit
a device built to study distant objects by making them appear closer Telescope
A round pit on the moon's surface Crateria
dark, flat regions on the moon's surface (seas)
Created by: cford1
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