Astonomy Flashcards
What is an astronomical unit?
An astronomical unit is the avg distance between the sun and the earth.
What is a light year?
The distance light travels in one year.
What is a Nebula?
A nebula is a cloud of dust.
What is a constellation?
A constellation are a group of stars in the night sky formed in a recognizable pattern.
What is a comet?
A comet is a chunck of frozen gasses, ice,and rocky debris that orbits the sun.
What is parsec?
A parsec is 3.26 times the number of years.
What is angular velocity?
Angular velocity is the rate of change or angular position and an rotating body.
What is an orbit?
An orbit is a curved path a celestial space craft around stars.
What is the science related meaning of period mean?
A period is a length or period of time.
What is the meaning of revolve?
Revolve is moving in a circle on a central axis.
What is rotation?
Rotation is the action of rotation around an axis.
What is the meaning of a sidereal day?
A sidereal day means the time between two consecutive traits.
What is a solar day?
A solar day is the time between two meridian tranists at a particular place.
What is the scientific meaning of planetesimal?
A planetesimal is a body that could come together with many other bodies while under gravitation and form another planet.
What is a protoplanetary?
A protoplanetary is the colection of matter in which the process of a new planet is formed.
WHat is the meaning of nucluer fusion?
Nucluer fusion is a nuclear reaction is an atomic reation in which low atomic numbers fuse into a heavier nuclues with a release of energy.
What is a terrestrial plant?
A terrestrial planet is a planet that has a rocky surface.
What is a gas giant planet?
A gas giant planet is a planet made almost entirely out of gas.
What is a comet?
A comet is celestial object which consist of dust or ice.
What is an asteroid?
An asteroid is a small rocky body circling the sun.
What is a cosmologist?
A cosmologists a an expert in charge of the use of cosmetics.
