Astronomy Flashcards
What is the average distance between the earth and sun called?
Astronomical Unit
Light-year is a form of time. True or false?
False. A light-year is the distance thatlight travels in a year
Is this equation true or false? 3.26*light-year=Parsec
True
What is a nebula made up of?
Gas and Dust
What is a constellation?
A group of stars that forms a shape or pattern in which is how it gets it’s name
Is a planetesimal when the planets aline with the sun?
No. A planetesimal is objects in space that join together to form planets, comets, asteroids, etc.
The process in which nuclei combine and react together to form one larger nucleus that creates energy
Nuclear Fusion
Terrestrial planets are planets that contain life forms.
No. A planet with a surface like Earth’s
Give an example of a gas giant planet
Jupiter
What is a comet?
An object that is made up of a nucleus of ice and dust
What’s the difference between a comet and an asteroid?
An asteroid is made out of rocks that orbits the sun and a comet is made out of gas
What does a Cosmologist do?
They study the evolution of the universe
What is the equation for angular velocity?
w=v/r
How long does it take the earth to orbit the sun?
365.26 earth days
What is a period?
A length of time
What is the definition of revolve?
To move around in a circular orbit
Use rotation in a sentence.
The Earth’s rotation is counterclockwise
