CH 30.2 Flashcards
Mercury?
Smallest and closest planet to the sun.
Venus?
The second closest planet to the sun.
Earth?
The third planet from the sun.
Mars?
The fourth planet from the sun.
How did the solar system form?
nebula collapse.
How long ago was the solar system formed?
4.6 billion years ago.
What is Mercury atmosphere like
there is no true atmosphere.
What is Mercury surface temperature?
430C to -170C.
What is Venus referred to?
Earth’s sister planet.
What is Venus atmosphere like?
A blanketed by a dense atmosphere.
What is the temperature on Earth?
Allow water to exist as a solid, liquid, and gas.
What does the ozone layer do?
Protect life from the sun’s radiation.
Why is mars called the red planet?
Because the iron oxide in some weathered rock.
How many moons does mars have?
2
What are the moons names?
Phobox and Deimox