the inner planets. the inner planets are: small: compared to the outer planets rocky: rocky...
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The Inner Planets are:The Inner Planets are:
Small: Compared to the Outer PlanetsSmall: Compared to the Outer Planets Rocky: Rocky surface – thin atmosphere Rocky: Rocky surface – thin atmosphere Dense: Heavy for their sizeDense: Heavy for their size
Inner Planets – Terrestrial PlanetsInner Planets – Terrestrial Planets
The Inner Planets are also called the The Inner Planets are also called the
Terrestrial PlanetsTerrestrial Planets
MercuryMercury
• Smallest Inner PlanetSmallest Inner Planet• Thin Atmosphere – SodiumThin Atmosphere – Sodium• Day: 59 Earth days (rotation)Day: 59 Earth days (rotation)• Year: 88 Earth days (revolution)Year: 88 Earth days (revolution)• Temp: Day: 425 deg. CelsiusTemp: Day: 425 deg. Celsius Night: -180 deg. CelsiusNight: -180 deg. Celsius• Mariner 10 space probeMariner 10 space probe Messenger (2009)Messenger (2009)• No MoonsNo Moons• Many craters…. Many craters….
VenusVenus
• About the same size as earthAbout the same size as earth• Many clouds-sulfuric acidMany clouds-sulfuric acid• High Temp.-Greenhouse effectHigh Temp.-Greenhouse effect >450 deg. Celsius>450 deg. Celsius• Carbon dioxide atmosphereCarbon dioxide atmosphere• VolcanoesVolcanoes• Retrograde Rotation: backwardsRetrograde Rotation: backwards• No MoonsNo Moons• Day:243 earth days Day:243 earth days • Year: 225 earth daysYear: 225 earth days• Magellan probe mapped surfaceMagellan probe mapped surface
EarthEarth
• The only planet with a lot of liquid The only planet with a lot of liquid water.water.
• Active PlanetActive Planet weather-volcanoes-earthquakesweather-volcanoes-earthquakes• Atmosphere: Nitrogen-oxygenAtmosphere: Nitrogen-oxygen• 1 large Moon1 large Moon• Day: 24 hoursDay: 24 hours• Year: 365 ¼ daysYear: 365 ¼ days
MarsMars• The Red Planet-rust in the soilThe Red Planet-rust in the soil• Polar ice capsPolar ice caps• 2 Moons – Phobos, Deimos2 Moons – Phobos, Deimos• Largest Volcano-Olympus MonsLargest Volcano-Olympus Mons• Many non-active volcanoesMany non-active volcanoes• Viking-pathfinder-spirit-opportunityViking-pathfinder-spirit-opportunity• ½ the size of earth- ½ gravity½ the size of earth- ½ gravity• Day: 24.5 hoursDay: 24.5 hours• Year: 688 earth daysYear: 688 earth days• Temp: -57 deg. CelsiusTemp: -57 deg. Celsius• Atmosphere: Thin-carbon dioxideAtmosphere: Thin-carbon dioxide
VenusVenus
From MagellanFrom Magellan
Brightest object Brightest object after the Sun and after the Sun and the Moonthe Moon