Solar System Flashcards
0
Q
astronimical unit (AU)
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
it is round, orbiting the sun, and has cleared out the region for the solar system along its orbit
3
Q
dwarf planet
A
an object that orbits the sun and has enough gravity to be spherical
4
Q
asteroids
A
one of the rocky objects revolving around the sun that are too small and numerous to be consider planets
5
Q
comets
A
a loose connection of ice and dust that orbits the sun, typically in a long, narrow orbit
6
Q
planetimical
A
one of the small asteroid-like bodies that formed the building blocks of the planets
