General Vocab Flashcards
(16 cards)
What is the astronomical unit?
the average distance between the Sun and Earth
What is light year?
distance light travels in one year
What is parsec?
a unit used to describe large distances
What is nebula?
light or dark particles or dust
What is constellation?
a group of stars in the sky
What is planetesimal?
small solid particles that make up the planets
What is protoplanetary?
a whirling mass of gas that rotates around a star
What is nuclear fusion?
when two or more atomic nuclei join together to form a nucleus
What is terrestrial planets?
a rocky planet that is made up of silicate rocks and meatals
What are gas giant planets?
a large planet is a large planet that is composed of rocks and other solid matters
Descride what a comet is.
an objejct in the sky made up of ice and dust
An asteroid is …
any small body of particles that revolve around the sun in orbits
Cosmologist is …
someone who studies the history and structure of the whole universe
Angular velocity is …
the rate of change of an angle in a object from some reference point
Explain orbit.
the curved path around a planet
A period is …
