Moon Phases Flashcards
Terrestrial plant
A planet having a rocky surface like earths
Moon phase
The appearance of the moon as seen by an observer on earth
Gas giant
A large planet composed mainly of gas
Horizon
The line along which the sky appears to meet the land or sea
Eclipse
A flattened circle
Moonrise
The time at which the moon appears about the eastern horizon
Moon set
The time at which the moon disappears before the western horizon
Astronomical Unit
The distant you to equal to the average Earth sun distance
Eccentricity
The degree by which the shape of an orbit differs from a circle
Dwarf planet
An object that is orbiting a star and is large enough to be rounded by its own gravity but not large enough to have cleared it’s never heard of other objects
Kepplers law
Three laws that describe the orbits of planets another orbiting bodies
Orbit
The path of one body around another body in space such as the path of earth around the sun
Orbital radius
The average distance from an orbiting object to the object it is orbiting
Period
The amount of time it takes for an object to complete one full orbit
Planet
And object orbiting a star that is round not itself a star, and large enough to have cleared small objects from the area around itself
