Vicab 2 Flashcards
Gravity
The force that attracts a body toward the center of the earth
Tide
Tide is the cycle of rising and falling of the surface of the bodies of water.
Waxing
A waxing moon is the one that is getting larger each night.
Waning
It gets smaller every night
Gibbous moon
Between a half moon but less than a full moon
Crescent moon
It is less than half illuminated
Full moon
The whole moon is illuminated
New moon
The Whole moon is dark
Quarter moon
The moon is one half illuminated
Perihelion
The point in the orbit of a planet which is closer to the sun
Aphelion
The point in the orbit of a planet which is furthest away from the sun
Heliocentric
Representing the sun as the center as the accepted astronomical model of the solar system
Geocentric
Having or representing the earth as the center as in former astronomical systems
Meteorite
A meteor that survives its passage through the earths atmosphere
Meteor
A small body of matter from outer space
Comet
A celestial object consisting of a nucleus of ice and dust
Asteroid
A small rocky body orbiting the sun
Gas giant
A large planet of relatively low density
Terrestrial
A rocky planet is a planet that is composed primarily of silicate rocks or metal
Ellipse
A regular oval shape traced by a point moving in a plane so that the sum of its distance from two another points
Astronomical units
A unit of measurement equal to 149.6 kilometers the man distance from the center of the earth
Penumbra
The partially shaded outer region of the shadow cast by an opaque object
Umbra
The fully shaded inner region
Eclipse
An obscuring light from one celestial body by the passage of another
Mare
Mares are large,dark,basaltic plains on earths moon
Solstice
When the sun reaches its highest or lowest point in the sky at moon
Equinox
The sun crosses the celestial equator when day and night are equal
Season
One of the four periods of the year (spring,summer,autumn, and winter)
Revelation
The movement of one object around a center or another object
Rotation
The process or act of turning or circling something
Impact crater
A crater on a planet or the moon caused by the impact of a meteorite or another object
Satellite
An artificial body placed in orbit around the earth or the moon
Universe
All existing matter and space considered as a whole
Galaxy
A system of millions or billions of stars
Solar system
The collection of eight planets and their moons in orbit around the sun
Orbit
The curved path of a celestial object or spacecraft
