Fc Flashcards
The path of an object in space as it moves around another object due to gravity _
Orbit
The Sun and its family of orbiting planets and moons and other objects. _
Solar system
Millions and 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 orbits a more massive object. _
Satellite
A round pit left behind on the surface of a planet after a smaller object strikes the surface_
Impact crater
An imaginary line about which a turning body such as Earth rotates _
Rotation
The motion of one body around another, such as the Earth in its orbit around the Sun _
Revolution
One of a pattern of temperature changes and other weather trends over the course of a year _
Season
In an orbit, a position and time in which sun shines equally on both hemispheres. _
Equinox
In an orbit, a position and time during which one hemisphere receives the maximum sunlight _
Solstice
A large dark plain of solidified lava on the moon
Mare
An event during which one object in space casts 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. _
Penumbra
