Planet Vocabulary Flashcards
Orbit
An circular path of an object as it revolves around another object
Solar system
A system of objects that revolve around a star
Galaxy
Millions or billions of stars held together in a group by there own gravity
Universe
Space and all the energy in it
Satellite
An object that moves an massive object
Impact crater
A Round pit left behind on the surface of a planet or an other body in space
Axis of rotation
An imaginary line about which turning body such as earth rotates
Revolution
The motion of one body around the other such as earths and its orbit around the sun
Season
On part of tempture changes and other weather trends over the course of the year
Equinox
In a orbit of portion and the time in wich sunlight shines equally on the northern and Southern Hemisphere a fine of the year when daylight and darkness are nearly equal for most parts of earth
Solstice
In a orbit during wich and the hemisphere recives maximum area of sunlight while the other hemisphere review minimum of sunlight. The time of year when days are earthier longest or shortest
Mare
A dark plain of solid field lava on The moon
Eclipse
An event wich one object in space cast a shadow onto another
Umbra
A dark region of shadow such as the cone of complete shadow cast by an object
Penumbra
A region of lighter shadow that may surround a dark central spreading cone of a lighter shadow cast by an object.