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
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1
Q

Solar system

A

The sun and everything it holds in it’s orbit

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2
Q

Terrestrial planets

A

-mercury, Venus, earth, mars

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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
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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
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5
Q

Earth

A
  • only planet with confirmed life

- water in all three states (solid, liguid, gas)

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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

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