Flashcards in Space Vocabulary Deck (34):
The path of an object in space as it moves around another object due to gravity
The sun and its family of orbiting planets and moons and other objects
Millions or billions of stars held together by their own gravity
Space and all the matter and everything in it
An object that orbits a more massive object
a round pit left behind the surface of a planet or other body in space after a smaller object strikes the surface
Axis of rotation
An imaginary line about which a object rotates
the orbiting of an object around another object
a period of the year determined by the position of Earth as it revolves around
In an orbit, a position and time in which sunlight shines equally on the Northern and Southern Hemisphere
In and orbit a position and time during which one hemisphere receives it maximum area of sunlight while the other hemisphere receives it minimum amount. The time of year when the days are both longest or shortest
A large dark plain of solidified lava on the moon
An event during which one object in some casts a shadow onto another
The dark central region of a shadow such as the cone of complete shadow cast by an object
A region of lighter shadow that may surround a dark central region. The spreading cone of lighter shadow cast by an object.
Astronomical Unit (AU)
Average distance from the sun which is approximately 93,000,000 miles or 150 million kilometers
An oval or flattened circle
a planet that has rocky surfaces
A large planet that consists mostly of gases in a dense form
a small solid rocky body that orbits the sun
A body that produces a coma of gas and dust, a small icy body that orbits the sun
A brief streak of light produced by a particle entering Earths atmosphere at high speed
Earth centered theory of the solar system
A sun centered theory of the solar system
The force that objects except on one another because of their mass
the rise and fall of the ocean's levels caused by the gravitational pull of the moon
The gradual increase of the illuminated surface of the moon
(of the moon) have a progressively smaller part of its visible surface illuminated, so that it appears to decrease in size.
Any moon that appears more than half lighted but less than full is called a gibbous moon
A crescent is a thin, curved shape that's thicker in the middle and tapers to thin points at each end, like the little sliver of moon you might notice in the sky.
the phase of the moon in which its whole disk is illuminated.
the phase of the moon when it is in conjunction with the sun and invisible from earth, or shortly thereafter when it appears as a slender crescent.
The moon is one-half illuminated by the sun. Occurs when the moon's illumination is decreasing, Waning Crescent. The moon is less than one-half illuminated by the sun but less than one quarter illuminated.