note -Venus and Mars - Venus and Mars Two most similar...

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Venus and MarsTwo most similar planets to Earth:Similar in size and massSame part of the solar systemAtmosphereSimilar interior structureno lifeI. VenusThe Rotation of VenusAlmost all rotate counterclockwise, Except Venus, Uranus and PlutoClockwise, with longer orbital periodCuz by Off-center collision with massive protoplanet + Tidal forces of thesun on molten coreThe Atmosphere of VenusInhospitableCO2+ N2+H2O + HCl + HF4 thick cloud layers, visibleThe Venusian GreenhouseCO2 - Very efficient “greenhouse”The Surface of VenusVenera13,probes, gather data, USSRshown in artificial colorsmountains, plains, cratersSmooth lava flows + Volcanic regions + Highland regions2 Highland regionsoAphrodite Terrais a highland region, near the equatoroIshtar Terra, smaller, atnorth poleMaxwell Montesohas the highest point on the planet's surfaceo~ 50 % higher than Mt. EverestNearly 1000 impact cratersoSurface not very oldoNo water on the surface; thick, dense atmosphere
oNo erosionoCraters appear sharp and freshVolcanism on VenusVolcanism on Earth is found along subduction zones; Rocky Mountains - -not found on Venus / MarsAllvolcanoeson Venus + Mars = shield volcanoes® Chains of volcanoesFound above hot spotsEx: The Hawaiian Islands on the EarthFeature:oCoronae: Circular bulges formed by volcanic activityoPancake Domes: Associated with volcanic activity forming coronaeoBaltis Vallis: 6800 km long lava flow channel (longest in the solarsystem!)Lakshmi Planum and Maxwell Mountains:Wrinkled mountain formations indicate compression and wrinklingA History of Venussimilar to Earth in mass, size, composition, densityno magnetic field

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Term
Spring
Professor
MargieAbdelrazek

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