2 The Inner Planets Terrestrial High temperatures Closer to the Sun Closer to each other
3 Mercury Closest to the Sun Only 88 days to orbit Many craters Temperature extremes400C during day, -180 at nightBasically no atmosphere
4 MercuryMercury is not the hottest planet even though it is the closest to the Sun
5 Venus Earth’s sister planet Morning and evening star Thick atmosphere of CO2 and SulfurLonger day than yearSpins opposite than other planetsOver 500C all the timeHottest planet in solar system
6 VenusThe atmosphere of Venus contains a high percentage of carbon dioxide that holds heat in the planet's atmosphere.The atmosphere of Venus is made of thick clouds of sulfuric acid and carbon dioxide, which makes it very hot.
7 Earth Home sweet home Only planet with sustained life Hydrosphere (water)Atmosphere made up of N, O, CO2Comfy temps
8 EarthEarth has fewer craters than other terrestrial planets because of its atmosphere (upper) which destroys meteorites.
9 Mars Frozen polar CO2 caps Smaller than Earth Slightly longer day and yearVery coldLargest mountain in solar systemOlympus MonsThin atmosphere
10 Mars has frozen polar ice caps and is known as the most like Earth.
11 Asteroid Belt Separates the inner and outer planets Possibly an annihilated planetMost asteroids hang out here
12 Outer Planets Gas giants No solid surface, just thick atmosphere All very largeVery far apart from each otherAll have rings
13 Jupiter Could hold 1300 Earths Almost big enough to be a star 12 EY = 1 Jovian year1 Jovian day = 12 EHHuge stormsGreat red spot “hurricane” larger than EarthSome moons may have water
14 Jupiter is largest planet in the solar system. Jupiter can fit all of the other planets inside this gas giant and there would still be space left over.
15 Saturn 29 years to orbit Large rings made of ice and dust 10 hour day Possibly still formingTilts itself
16 SaturnSaturn is known for its’ rings and is the least dense planet. It would float in a swimming pool if we had one big enough to put this planet into.
17 Uranus Blue in color due to methane gas 84 years to orbit Rotates sidewaysVery cold-250C
18 UranusUranus also has rings, but lies on its side so the rings go around it vertically.
19 Neptune Methane atomosphere 164 years to orbit -250c temps 30 times farther from the sun than Earth
20 NeptuneNeptune is blue because it is mostly made of a gas called methane
21 PlutoPluto is not a planet, because of its size and irregular orbit.