1Comparative Planetology Mercury, Venus, Earth, Moon, Mars Astronomy 100Comparative PlanetologyMercury, Venus, Earth, Moon, Mars
2Now: How are planets formed. Why does Earth have water Now: How are planets formed? Why does Earth have water? How do rocks form?Main concepts: solar system formation, comparative planetology, Moon formation hypotheses, cratering, plate tectonics, volcanism, earthquakes, atmosphere, solar wind/auroras,Vocabulary: protoplanetary disk, crater, Heavy Bombardment, cratering, atmosphere, mantle, differentiation, plastic, greenhouse effect, albedo, ejecta, rays, solar wind, auroras
3Formation of the Solar System The Solar Nebula was spinningProtostarProtoplanetary diskBits coalescedTa-da – planets!NOW:String represents 5 billion years (50 feet)Each foot is 100 million years.Place the events in order.You have 20 minutes ONLY
15Martian North Pole and Terrestrial (Earth) South Pole Describe three things that are the same about the landforms.Describe three things that are different about the landforms.Why do both planets have ice caps?Why are the ice caps different sizes?Valles Majas & the Grand CanyonWhat force do you think formed the Grand Canyon?What force do you think formed Valles Majas?Do you think it is the same force? Why or why not? How do your observations support this conclusion?Olympus Mons and the Hawai’ian IslandsUsing the contour gauge, trace the profile of both Olympus Mons and Hawai’i. Draw your guess for what the internal structure might look like inside both volcanoes.
17Answer Now:Why do the Moon and Mercury have more craters than the Earth?What types of planets are there in our Solar System?
18Vocabulary: Apollo, MER, Altair, Constellation, Venera, MESSENGER Now: How many other worlds have humans walked on? How many “planets” have we “explored?”Main concepts:Mercury missions past and futureVenus missions past and futureMoon missions past and futureMars missions past and futureVocabulary: Apollo, MER, Altair, Constellation, Venera, MESSENGER
19Answer Now:Why do the Moon and Mercury have more craters than the Earth?What types of planets are there in our Solar System?