1
________ are also called terrestrial planets.
2
Great dark spot
3
The hottest planet in our solar system.
4
________planets are mostly made up of gas.
5
This planet has visible rings.
6
The largest planet.
7
The elliptical path of the planets.
8
The spinning of a planet on its axis.
9
The "Red Planet"
10
2/3 of this planet's surface is covered by water.
11
The closest planet to the Sun.
12
The axis is tilted on its side.
13
A natural force of attraction exerted by one object on another object.
