2 The Inner Planets are Terrestrial Terrestrial Planets with rocky surfacesHigh temperaturesCloser to the SunCloser to each otherTerrestrial planets share features:tectonicsvolcanismweathering and erosionimpact catering
3 Mercury Closest to the Sun Only 88 days to orbit Bombarded with impact cratersTemperature extremes800 F during day, -280 F at nightBasically no atmosphereYour weight: If you weigh 100 pounds on Earth, you would weigh 38 pounds on Mercury.
4 Venus Thick atmosphere of CO2 and Sulfuric acid Your weight: If you weigh 100 pounds on Earth, you would weigh 88 pounds on Venus.Sulfur Dioxide rain (acid rain)Active volcanoesLonger day than yearSpins opposite than other planets (Retrograde Motion)Over 870 F all the time
5 Earth Home sweet home Only planet with sustained life Hydrosphere (water)Atmosphere made up of N, O, CO2Comfortable temps
6 Mars Frozen polar CO2 caps Smaller than Earth Slightly longer day and yearVery cold (60 F to -130 F)Largest mountain in solar systemOlympus MonsThin atmosphere of CO2Air pressure 1% that of EarthRust gives Mars it’s color (iron and oxygen reaction)Your weight: If you weigh 100 pounds on Earth, you would weigh 38 pounds on Mars.
7 Asteroid Belt Separates the inner and outer planets Possibly an annihilated planetMost asteroids hang out here
8 Outer Planets are Gas giants No solid surface, just thick atmosphereAll very largeVery far apart from each otherAll have rings
9 Jupiter Could hold 1300 Earths Almost big enough to be a star Temperature is -234 F on average12 Earth years = 1 Jovian year1 Jovian day = 10 Earth HoursJupiter’s enormous gravitational pull allows it to have 63 moons!Weight: If you weigh 100 pounds on Earth, you would weigh 265 pounds on Jupiter.Huge stormsGreat red spot “hurricane” larger than EarthJupiter
10 Saturn 30 years to orbit Rotates in 11 hours Large rings made of ice and dustExtremely low densitySaturn's density is lighter than water (0.7) which means if you had a body of water big enough to hold it, it would float! Your weight: If you weigh 100 pounds on Earth, you would weigh 107 pounds on Saturn.
11 Uranus Blue in color due to methane gas 84 years to orbit It is the only planet to rotate on its side. Scientists are unsure why it rotates that wayIt has approximately 20 years of daytime and 20 years of nighttime because one pole faces the sun for a couple of decades and then the other for a couple.Temperature -353 F averageUranus
12 Neptune Methane atmosphere 164 years to orbit -250c temps 30 times farther from the sun than EarthNeptune’s winds are the fastest of any planets in the Solar System and can reach more than 1,200 miles per hour