|
|
1
|
Solid, rocky surface.
|
4
|
The trapping of heat in the atmosphere..
|
7
|
Smallest terrestrial planet, closest to the sun.
|
8
|
Earth has enough ________ to hold most gases.
|
9
|
Mercury has virtually no _________.
|
10
|
Has three main layers.
|
11
|
Venus rotates so ________ that its days are longer.
|
|
|
|
|
2
|
The inner planets are also called ________.
|
3
|
Earth's 'twin'
|
5
|
The amount of inner planets.
|
6
|
Venus's atmosphere is so _________, its always cloudy.
|
|
|