Sicnce 3 Flashcards
Orbit, Solar System, Galaxy, Universe, Satellite, Impact Crater, Axis of Rotation, Revolution, Season, Equinox, Solstice, Mare, Eclipse, Umbra, Penumbra, Astronomical Unit (AU), Ellipse, Terrestrial Planet, Gas Giant, Asteroid, Comet, Meteor, Meteorite, Geocentric, Heliocentric, Gravity, Tide, Waxing, Wanig, Gibbous Moon, Crescent Moon, Full Moon, New Moon, Quarter Moon
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Orbit
The path of an object in space as it moves around another object due to gravity
SolarSystem
The sun and its family of orbiting plants and moons and other objects
Galaxy
Millions or billions of stars held toghter in a group by their own gravity
Universe
Space and all the matter and engery in it
Satellite
An object that orbits a more massivie object
Impact carter
A round pit left behind on the surface of a planet or other body in space after a smaller object strikes the surface
Axis of Rotation
An imaginary line about which a turning body such as the earth rotates
Revolution
The motion of one body around another such as the earth in its orbit around the sun
Season
One part of a pattern of temperature changes and other weather courses of a year
Equinox
In an oribit position time in which sunlight hemisphere. A time of the year when daylight and darkness or near the equal for most parts of the earth.
Solstice
In an oribit A position and time during which one hemisphere receives it maximum. Sunlight while the other hemisphere reaches its minimum amount the time of year when the days are either longest or shortest
Mare
A large dark plane of solidified lava on the moon
Eclipse
An ovial or flatted circle
Terrestrial Planet
A planet that has a rocky surface
Gas Giant
A large planet that consist mostly of gases in a dense form
Asteroid
A small solid rock body that oribits the sun
Comet
A body that produces a coma of gas and dust a small icy body that orbits the sun
Meteor
A brief streak of light produce by a partial angering earth atmosphere at high speed
Meteorite
A small object from outer space that passes through earths amosfear and reachers the surface
Geocentric
Earth centers theaory of the solar system
Heliocentric
A sun centered theory of the solar system
Gravity
The force that objects exert on one another because of their mass
Tide
The raise and fall of the ocean levels caused by the gravitational pull of the moon
Waxing
The gradual increase of the illumination surface of the moon
Wanig
The garudation decreases in the illumination surface of the moon
Gibbous Moon
More than half but less than fully illuminated
Crescent Moon
The illuminated surface is less than a quater illuminated
Full Moon
The entier surface of the moon is illuminated
New Moon
The entier surface of the moon is illumated
Quarter Moon
Half of the moons surface is illuminated
Umber
The dark central region of a shadow such as the cone of complete shadow cast by an object
Peneumbra a region of light shadow that may surrowand a dark central region the spearing cone of lighter cast by an object
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Astronomic unit
Average distance from the sun which is approximately 93,000,000 miles hundred 150 million km
