Astronomy Part 2 Flashcards
0
Q
Sun
A
- important to our solar systems survival
- it has over 99% of the solar systems mass
- sun is a massive nuclear fusion and therefor emits energy
- sun is a low mass star
1
Q
Solar system
A
The sun and everything it holds in it’s orbit
2
Q
Terrestrial planets
A
-mercury, Venus, earth, mars
3
Q
Mercury
A
- Smallest planet
- closest to sun
- revolution is 88 of our days
- rotation is 59 days
- has no atmosphere
- no moons
- hot during the day cold during night
4
Q
Venus
A
- most similar to earth in size
- extremely thick atmosphere
- lots of active volcanic action
- surface is hot and getting hotter
- acid rain in atmosphere
5
Q
Earth
A
- only planet with confirmed life
- water in all three states (solid, liguid, gas)
6
Q
Mars
A
-Often referred to as red planet
-most like earth and most likely to
Travel to
-has an atmosphere but is thin and is mainly carbon dioxide
-temp ranges to 0-(-90)
-has polar caps
