2 Ideas About the Solar System Earth-Centered Model: Thought the ___________, Sun, ___________, and Stars were in separate _____________ that rotated around the ________.Sun-Centered Model: ________________ stated ___________ revolved around ___________ and Earth moved around the _____________.Galileo: observed ______________ going through _____________ like the Moon and proved it was _______________ around the __________.Modern View: ____ planets, Sun is ___.___% of the _____________ in Solar System so __________________ is ____________ and holds all objects in their _______________.
3 How Solar System Formed __.__ billion years ago was a ____________ of gas, _________, and _______________________ fragment contracted into a __________, tightly packed, ______________ diskDisk _____________ so hot and ___________ and created the __________ from nuclear ________________ (___ atoms started to ___________ and release _______________)Rest of material _______________ enough to ______________ into scattered _______________Clumps ______________ and ______________ to form 8 _________________
4 Motions of PlanetsJohannes ________________: studied ______________ of planets________________ orbits: _________ shaped_________ is not directly in _____________ of the orbitsFound _____________ travel at different _______________Planets ____________ to sun travel __________________
5 Questions What is the Sun-Centered Model? What is the Earth-Centered Model?Who proved planets orbited around the Sun?Why does the Sun hold all objects in the Solar System?In a paragraph, write about how the Solar System formed. Must be at least 5 or more sentences.Who studied the orbits of the planets?Why do planets travel at different speeds?
7 Mercury ___________ planet to sun, ___nd smallest Mariner 10 – found looks just like the Earth’s _________, many ____________ and cliffsMercury may have _________ due to weak magnetic _____________________ coreNo ______________Temperatures: ______°C day and -______°C nightNo __________
8 Venus Similar to __________ in size and mass ____nd from the sun Thick atmosphere of ____________ dioxideDroplets of __________ acid give clouds yellowish color__________, fault like cracks, and _______________________________ effect – sunlight gives off heat in atmosphere and absorbed by carbon dioxideTemperatures: ______°C to _______°CNo ___________
9 Earth Atmosphere ____________ life ____rd from the sun Temperatures allow water to be __________, ____________, and _________Only planet with known _________One large moon - __________
10 Mars ____th from the sun Reddish-yellow from ________ oxide in _______ Polar _______ capsChannels show __________ once flowedLarge volcanoes and valleys – __________ MonsThin atmosphere – carbon _____________Temperatures: -_______°C to _____°CHuge __________ storms________ small, irregular shaped moons – _____________ and ___________
11 QuestionsWhat is the order of the inner planets from closest to farthest from the sun?Why do you think Mercury’s temperature changes so much from night to day?What causes the yellowish clouds to form on Venus?What is the greenhouse effect?Which planet is the only to have known life exist?What is the Earth’s moon called?Why is Mars a reddish-yellow color?Which planet has the largest volcano? What is it called?
12 Jupiter _________ planet from the sun __________ planet Voyager revealed Jupiter has faint dust ________Made of mostly __________ and helium, with some ammonia, methane, and water _________Middle of Jupiter, atmosphere is ________ hydrogen and helium and below a rocky _______Colorful clouds of white, ______, tan, and _______Great _____ Spot – continuous ________ of swirling, high-pressure ______ Moons (satellites) – at least _______ orbit Jupiter
13 Jupiter’s Moons_____ – most volcanically active _________ in solar system, ___________ gives it a reddish, orange color, thin atmosphere of sulfur dioxide_________ – rocky interior with ___km thick crust of ice, many cracks, ____km deep ocean may exist under the ice, thin ___________ atmosphere___________– heavily _________ covered with icy grooves, rocky interior surrounding _________ iron core, thin oxygen _________________________ – heavily cratered with mix of ______ and rock, rocky ________, thin atmosphere of ____________ dioxide
14 Saturn __________ planet from sun Second largest planet, but lowest density and _______________Thick outer atmosphere of hydrogen and helium with ammonia, ____________, and water vapor, deeper in atmosphere becomes a liquid and then below a small, ____________ coreRings – the large ring has thousands of thin ringlets made of _______ and ________ particles that vary in sizeMoons (satellites) - at least ______ orbit Saturn, __________ holds them in the orbit_________ – largest moon, larger than __________, thick atmosphere of nitrogen, argon, and methane
15 Uranus __________ planet from the sun Large and gaseous, ______ moons _______ thin, dark rings at equatorLargest moon, ___________, heavily cratered, deep valleys______________ – hydrogen, helium, and methane_______________ gives planet __________-green color because absorbs red and yellow light and clouds reflect green and blueFew cloud bands and _____________ visibleMade of _______ and ___________Uranus’ axis of rotation is ___________ on its side
16 Neptune ______th planet from sun Large, gas planet with _________ Sometimes farther from sun than ______________________ atmosphere gives blue-green colorDark colored ___________ in atmosphereAt least ______ moonsRocky __________Made of rock and various _________Thin atmosphere of ____________
17 Dwarf Planets___________ – located in asteroid belt, orbits the sun every 4.6 years, 940 km diameter__________ – 2300 km diameter, 248 years to orbit sun, solid icy-rock surface, three moons____________ – 2,400 km diameter, 557 years to orbit sun, one moon
18 What is a planet? Orbits around the __________ Has enough _________ for its gravity to overcome forces so that it keeps its _____________ shapeHas cleared the ________________ around its orbit
19 Questions What is the Great Red Spot on Jupiter? What are the four largest moons of Jupiter?What are Saturn’s rings made of?What is Saturn’s largest moon? Describe it.Why does Uranus have a bluish-green color?Why is Uranus different from other planets?What gives Neptune its blue-green color?What are the dwarf planets?What are the three criteria for an object to be a planet?