Quiz 1 hard ones Flashcards
Inner vs Outer planets (which are which, and comparisons of general characteristics )
Terrestrial/inner:
Small
Higher density
Solid planetary surface
Composed of silicate rock or metals
Mercury, Venus, Earth, and Mars
Jovian/outer:
Large
Gaseous planets
Composed of gases and frozen compounds “gas giants”
Composed primarily of hydrogen and helium
Lower density
Jupiter, Saturn, Uranus, and Neptune
Sun info
Biggest, brightest, and hottest object in the solar system
99.86% of the solar system’s mass
Sun is a medium size, main sequence star
Sun is composed of about 70% hydrogen and 28% helium
Mercury info
Mercury is solid and covered with craters
Mercury has almost no atmosphere
Mercury is the smallest planet by volume
Second densest planet but is made of densest materials (silicate rock and lots of metal)
Venus info
Similar in size to Earth, sometimes called Earth twin
Surface is rock and very hot, thick CO2 atmosphere completely hides surface and traps heat (runaway greenhouse effect)
Sunlight barely reaches surface b/c of atmosphere
Surface temp. hot enough to melt lead (900 fahrenheit)
Rock surface, dense, terrestrial planet, metal core
