Note for PTYS 206 at UA
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This 9 page Class Notes was uploaded by an elite notetaker on Friday February 6, 2015. The Class Notes belongs to a course at University of Arizona taught by a professor in Fall. Since its upload, it has received 17 views.
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Date Created: 02/06/15
Seasons First a question What is a great month to snow ski if you live in New Zealand October July December March In the southern hemisphere the hot months are December through February and the cold months are June through August 96nd T um Manta Ina Rank Common Misconception One might think Earth s seasons are caused by changes in distance of Earth from Sun This idea is WRONG If it were true the hot months and cold months would be the same in both hemispheres contrary to observations Earth s distance to the Sun changes by only a small amount not enough to cause seasons Seasons result from differences in sunlight caused by the tilt in the Earth s rotation axis In northern summer the north pole is aimed 235 toward the Sun 80 the northern hemisphere absorbs more light In northern winter the north pole is aimed 235 away from the sun The northern hemisphere absorbs less light This explains why the southern hemisphere experiences the opposite of the northern hemisphere Note that the direction of Earth s spin axis stays fixed over the year only its angle with the Sun changes Sp 39ng in he nunlum In autumn in 1 munm humsp vcru NDth Pole Winmr in the nnnlmu hcmlspl m summer in ma snulllum hLmisylucrc Nunh Pal Snulh Puk Nunh Pal Sumh l uln Sumh I uh Summer lllc nunlwm hm when mm m hmumm Immphm umh Pal x Aummn in dquot quotmum hm sphur spring 39 he soulln m Ilcmisphwlc w 1 1 l k m ropic of A1I1kLI lqlmmr lru It nl39 Lalprimrn nmrrlic quotrclc an al winlur sulslik c a 75 Whart39 are seas We on Venus Mm v Uranus WA Min Max In F Iane l EmmiI7 39Di mcz Dishnae 392th jAuI Au 7 Axis EaHL 0 on 0933 I or 23 5 Venus o 0068 0713 0728 2 6 Mars 0093 L38 666 252 Uranus 0 043 3983 2002 97 9
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