Solar System Flashcards
0
Q
Astronomical Unit
A
A unit of distance equal to the average distance between Earth and the sun, about 150 million kilometers.
1
Q
Solar System
A
The system consisting of the sun and the planets and other objects that revolve around it.
2
Q
Planet
A
An object that is round, orbits the sun, and have cleared out of its regio
3
Q
Dwarf planet
A
An object that orbits the sun and has enough gravity to be spherical but has not cleared the are of its planet
4
Q
Asteroids
A
Small mostly rocky bodies
5
Q
Comets
A
Loose balls of ice and rock that usually have very long narrow orbits
6
Q
Planetesimal
A
One of the small asteroid like bodies that formed the building blocks of planets
