Astronomy Flashcards
An Antronomical Unit is……?
The average distance between the Sun and Earth.
What is the definition of a Light-Year?
A unit of measurement equal to the distance light travels in one year.
What is the definition of Parsec?
A unit in astronomy to describe large distances.
A Nebula is………….?
A term used for any “fuzzy” patch on the sky
Define Angular Velocity
The position of a rotating body
What is the definition of Orbit?
A circular path around a star, planet, moon, etc.
A period is…..
Contstellations are……
A group of stars that are in recognizable patterns
What is the definition of Planetesimal?
One of the small bodies that formed from the solar nebula
What is a Protoplanetary body?
Collected matter formed together to make planets
Nuclear fusion is…….
when nuclei in low numbers fuse together to form a bigger nucleus
Terrestrial planets are………?
Four rocky surfaced planets closest to the sun
Gas giant planets are…….?
planets that are made up of mostly gas
What is the definition of Comet?
An object in space that is made up of ice and gas
what is the definition of Asteroid?
A small rock that orbits around the sun.
