30.2 Flashcards
1
Q
When was the solar system formed
A
4.6 billion years ago
2
Q
The smallest and closest planet to the sun
A
Mercury
3
Q
What type of atmosphere does Mercury have
A
Mercury has no true atmosphere
4
Q
The second planet from the sun
A
Venus
5
Q
What type of atmosphere does Venus have
A
A Dense atmosphere
6
Q
Which planet is referred to as Earth’s sister planet
A
Venus
7
Q
The third planet from the sun
A
Earth
8
Q
The fourth planet from the sun
A
Mars
9
Q
What is Mars also known as
A
The Red Planet
10
Q
Why is Mars red
A
Iron Oxide
11
Q
How many moons does Mars have
A
2
12
Q
What are the names of those 2 moons
A
Phobos and Deimos
13
Q
What did Mariner 9 discover
A
Valles Marineris and extinct volcanoes
14
Q
What did Global Surveyor do
A
It examined the walls of Valles Marineris
15
Q
Where did Curiosity land
A
Gale Crater
