Astronomy Flashcards
What is the distance between the earth and the sun?
An Astronomical Unit
What is the distance light travels in one year?
A Light Year
What measurement describe large distances?
A Parsec
A cloud of dust or gas in outer space is called a what?
A Nebula
What is a group of stars named after a mythological creature called?
A Constellation
What are the small bodies called that orbited the sun while the planets were being formed?
A Planetesimal
A rotating disk of dust and gas that surrounds a developing solar system is called a what?
Protoplanetary
True or False: Nuclear fusion is when a nucleus with a small atomic number forms a heavier nucleus while releasing energy.
True
A planet that has a rocky surface is called a what?
Terrestrial Planet
What is a type of panet that is made entirely of gas called?
A Gas Giant Planet
What is a body moving around the sun in orbit that is surrounded by dust and gas? A gas giant planet, a comet, or a parsec?
A Comet
Is an asteroid a small body that orbited the sun while the planets were being formed or a small body that revolves around the sun usually between Mars and Jupiter?
A Small body that revolves around the sun usually between Mars and Jupiter.
A cosmologist is a:
A: The science that is concerned with space life
B: The branch of astronomy that deals with the struture of the universe
B: The branch of astronomy that deals with the struture of the universe
Angular velocity is the rate of change of angular position of a rotating body. True or False?
True
Is the curved path of an object around a star, planet, or moon a rotation or an orbit?
An orbit
What is a length of time?
A: Period
B: Year
A: Period
What is an object doing if it is moving in a circular orbit?
It is revolving.
What is the movement of an object rotating on it’s axis?
The movement is rotation.
The time the earth takes to make a full rotation is called a:
A: Sidereal Day
B: Rotation
A: Sidereal Day
True or false? The twenty-four hour period from midnight to midnight is a sidereal day.
FALSE. The Twenty-four hour period from midnight to midnight is a solar day.
What is the time where any planet completes a full revolution around the sun?
A year.
