Introducing The Solar System Flashcards
0
Q
Astronomical unit
A
A unit of distance equal to the average distance between earth and 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 area of its planet.
4
Q
Asteroids
A
Small mostly rocky bodies that orbit the sun
5
Q
Comets
A
Loose balls of ice and rock that usually have very long narrow orbits
6
Q
Planet simial
A
One of the small asteroid like bodies that formed the building blocks of planets.
