Space Flashcards
(32 cards)
Solar system
The sun, planets, and various smaller bodies make this up.
Universe
Space and all the matter in it.
Satellite
An object that orbits a more massive object
Impact crater
When an object strikes the surface of a larger Object in space it explodes and leaves behind a round pit called
Axis of rotation
An imaginary line in the middle of the earth that the earth spins on.
Revolution
The motion of one object around another
Season
Patterned of temperature changes and other weather trends over the course of a year.
Equinox
Sunlight shines equally on the northern and Southern Hemispheres.
Mare
Large dark Baltic plains on earths moon.
Eclipse
Occurs when a shadow makes the sun or moon seem to grow dark.
Umbra
The darkest part
Penumbra
The lighter shadow
AU
Average distance from the sun.
Ellipse
The shape of each orbit
Terrestrial planet
The planets closest to the sun.
Gas giants
Mainly made of hydrogen helium and other gases.
Asteroids
Small solid rocks bodies the orbit close to the sun.
Comet
An object that produces a coma.
Meteors
Brief streaks of light.
Meteorite
A space object that reaches earths surface.
Geocentric
Measured from or considered in relation to the center of the earth.
Heliocentric
measured or considered relation to the center of the sun.
Gravity
The force that attracts a body toward the center of the earth.
Tide
Periodic rises and falls of large bodies of water.
