THE PLANETS Szydagis / 24

Planet Report  We will break up into exactly 7 groups  Sound off 1, 2, 3, 4, 5, 6, 7. Then collect  1: Mercury  2: Venus  3: Mars  4: Jupiter  5: Saturn  6: Uranus  7: Neptune  Please don’t use your phone or computer 2

Magnet Activities (on the board)  First things first please identify every magnet image  Order the planets from closest to furthest from Sun  Then, order from  Period of revolution (“year”) from the shortest to longest  Hottest to coldest  Largest to smallest (in mass)  I’ll look at my grade book and call on people < 7 3

Mercury 4

Venus 5

Earth 6

Mars 7

Asteroid Belt 8

Ceres 9 jpl.nasa.gov

Jupiter 10

Saturn 11

Uranus 12

Neptune 13

Pluto + Charon 14

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And Beyond 16

Would Saturn Float?  Facts to consider, quantities with units  Mass = x kg  Diameter = 116,464 km (Radius = half of diameter)  Volume (of sphere) = (4/3) * pi * radius ^3  Density = Mass / volume  “Official” density of water ~ 1,000 kg / m^3  Requirement this time to make things fairer: ONE physics major (no more, no less) per group  Hint: there is no one correct answer! 17

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Mass versus Gravity (Not 1:1) 19

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Idea of Scale, Temperatures 22 solarsystem.nasa.gov

Homework  This is the dumbest thing that happened on the Senate floor today 015/2/26/ /j ames-inhofe-global- warming 015/2/26/ /j ames-inhofe-global- warming  A couple of magazine articles I’ll post later today on our website (read for this Monday) “Poets say science takes away from the beauty of the stars – mere gobs of gas atoms. Nothing is "mere." … For far more marvelous is the truth than any artists of the past imagined! Why do the poets of the present not speak of it? What men are poets who can speak of Jupiter if he were like a man, but if he is an immense spinning sphere of methane and ammonia must be silent?” -Richard Feynman 23

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