New Deck Flashcards
What is a angular velocity?
The time rate of change of angular position of a rotating body,
What is the definition of asteroid?
It is small rocky body orbiting the sun.
What is an Astronomical Unit?
A unit of measurement that is the distance from the center of the earth to the center of the sun.
What does the word Comet mean?
It is a celestial object that is a nucleus made up of ice and even dust.
What is the definition of a constellation?
A group of stars that forms a pattern that is named after its apparent form or identified with a mythological figure.
What is the definition of cosmologist?
It is the branch of philosophy dealing with the origin and general structure of the universe.
What is the definition of a gas giant planet?
It is a planet that is mostly made up of gases surrounding the rocky core.
What is the definition of the word light year?
It is the astronomical distance that it takes light to travel in one year.
What is a nebula?
A cloud of gas and dust cloud in outer space, that you can see in the night time.
What is nuclear fusion?
A nuclear reaction that forms a heavier nucleus with the release of energy.
What does orbit mean?
It is the curved path, usually elliptical, described by a planet around a celestial body.
What does the word parsec mean?
A parsec astronomical unit of distance that is equal to almost 3.25 light years.
What is a period?
A period is a a round of time or series of years by which time is measured.
What is a planetesimal?
A body that could come together with use of the gravitational pull to form a planet.
What is a protoplanetary?
It is a rotating circumstellar disk of dense gas surrounding a young newly formed star.
What does revolve mean?
It is to move in a circular or curving course or orbit.
What is the definition of rotation?
It is the movement or path of the earth or another heavenly body turning on its own axis.
What is a solar day?
The 24-hour interval from one midnight to the following midnight.
What is terrestrial planet?
They are planets that are made up mostly of silicate rock.
