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BATTLE OF THE PLANETS

BATTLE OF THE PLANETS. EARTH vs JUPITER. Small... Rocky... Liquid water... Breathable Atmosphere. Huge... Gassy... - 160 o C... ...can you breathe ammonia & methane?. solar nebular theory. Nebula collapses due to gravity... Forms spinning disk with protosun in middle...

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BATTLE OF THE PLANETS

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  1. BATTLE OF THE PLANETS EARTH vs JUPITER

  2. Small... Rocky... Liquid water... Breathable Atmosphere... Huge... Gassy... - 160o C... ...can you breathe ammonia & methane?

  3. solar nebular theory • Nebula collapses due to gravity... • Forms spinning disk with protosun in middle... • Planetesimals form in disk... • Protoplanets develop; denser matter gathers closer to center, while less dense matter accretes in the periphery... • Fusion begins & blows away left-over dust & gas.

  4. Inner planets contain large percentages of heavy elements (Fe, Ni). Mercury, Venus, Earth & Mars. Small, rocky dense. Outer planets formed far away from sun (COLD!); kept their gases (H, He) and ices (methane, ammonia). Jupiter, Saturn, Uranus, Neptune. Large, gassy, low density. Inner & Outer planets

  5. Earth is...SO HOT!!! • HEAT from collisions (all those small planetesimals banging into each other. • HEAT from weight of layers piling on top of each other. • HEAT from decay of radioactive materials within Earth.

  6. DIFFERENTIATION HEAT caused early Earth materials to be in a molten state. Dense material (Fe, Ni) sank towards center... Less dense material (Si) winds on top. Core...mantle...crust.

  7. Atmosphere • Less dense gases (H, He) rise to top & become first Earth atmosphere; doesn’t last long (too light to be held by gravity). • OUTGASSING from volcano eruptions releases water vapor, CO2, N2, CH4, SO2, NH4 to form second atmosphere. • As life develops, organisms use CO2 during photosynthesisto arrive at present-day O2atmosphere.

  8. Where did all that water come from? Where did all that water come from?

  9. Maybe from outer space! • THEORY: Comets struck Earth, bringing ice/water to atmosphere. • Rain resulting from comet ice/water gave Earth the oceans. • Salt in oceans comes from land runoff. • ...or maybe the water came from volcanoes...?

  10. BATTLE OF THE PLANETS (part II) EARTH vs Mars

  11. Year = 365 days Mt Everest: 8 km high Plenty of malls... All your friends are here Year = 687 days (you’d only be 8 yrs old...) Olympus Mons: 24 km Possibility of H2O...

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