WORDS Flashcards
the circular path of an object as it revolves around another object
Orbit
The sun and it’s family of orbiting planets and moons and other objects
Solar System
Millions or billions of stars held together in a group by their own gravity
Galaxy
Space and all the matter and energy in it
Universe
An object that obits a more massive object
Satellite
A round pit left behind on the surface of a planet or other body in space after a smaller object strikes the surface
Impact Crater
An imaginary line about which a turning body such as earth rotates
Axis of Rotation
One part of a patten of temperature changes and other weather changes tends over a course of a year
Season
In a obit a position and time in which sunlight shines equally on the Northern and Southern Hemispheres a time of the year when daylight and darkness are nearly equal are nearly equal for most parts of earth
Equinox
In an obit a position and time during which one hemisphere receives it maximum are of sunlight while the other hemisphere receives it minimum amount the time of year when the days are either longest or shortest
Solstice
A large dark plain of solidified lava on the moon
Mare
An event during which one object in space cast a shadow onto another
Eclipse
The dark central region of a shadow such as the cone of complete shadow cast by an object
Umbra
A region of lighter shadow that may surround a dark central region. The spreading come of lighter shadow cast by an object
Penumbra
Average distance from the Sun which is approximately 93,000,00 miles or 150 millions kilometers
Astronomical Unit (AU)
An oval or flattened circle
Ellipse
A planet that has a rocky surface
Terrestrial Planet
a large planet that consists of mostly gases in a dense form
Gas giant
a small rocky body orbiting the sun
Asteroid
a body that produce a coma of gas and dust, a small icy body that orbits the Sun
Comet
a brief streak of light produced by a particle entering Earths atmosphere it high speed
Meteor
a small object from outer space that passes through Earths atmosphere and reaches the surface
Meteorite
Earth centering theory of the solar system
Geocentric
A sun centering theory of the solar system
Heliocentric