Universe vocab set 1
Order by
13 terms
Terms | Definitions |
|---|---|
 gravity | the force of attraction between all masses in the universe |
| Geocentric Model | the early, incorrect model of our solar system with the earth in the center |
| Heliocentric Model | the accepted model of our solar system with the sun in the center |
| Universe | all of space and everything in it |
| Galaxy | a collection of star systems |
| Milky Way Galaxy | the galaxy containing the solar system |
| Star | any celestial body visible (as a point of light) from the Earth at night |
| Planet | any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system |
| Solar System | system made up of the nine unique planets, including earth, and many smaller objects, that orbit the sun. |
| Light-Year | the distance light travels in one year |
| Astronomical Unit | the average distance between the earth and the sun |
| Universal Law Of Gravitation | the gravitational force between objects depends on their masses and decreases rapidly as the distance between the objects increase |
| Inverse Square Law | gravitational force varies inversely with the square of the distance between two objects |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.