Mathematics and Society - OS X Lion Server

269-/ I ----=---::--~::::::=~...l300 -'--320 \ ••\ .. """_ ......._ I "', ' t\(\ f ,'-~ : 377 409 r'.367 \",' ("'\\ \ r---------J___'!. 411 /.406 c.v-;- I 390 '; "-,---_1 ! 46; I • L-_~3_2__ ~, -- ....,_, L___ I \, •, 477 ...... _~ I --- .......,- ... / '(""--f I I , \ ) 3341 I • l I \ ..,436, • I .,.------1 \ f., J 399, --~ 370. ~---.--.,I\, I , • L ~, 398 \484f , 479 "• \ I I \ • '",, 514 I I '466 , /~'\ L I I I '... r(.,J __ -, I -- I. .. / --.\.. ---- _' I I I..r J .t'---/ 399\ ,.... r--__ j' __. '\ ' , 530- - - - -r .L_ - - -4-13- - - - - I _ _ ,-L_.r .. /-'i ' ~._--"'. ,..--- I. 395 376--,AVERAGE DAILYcoY../CfYY\2. FROMI. ISUNI 1 , ~_"\) I I I &480 I • ) __..,.----,- -,I 540 I ,I I 405 -, \ -'If • I I l I J I \ ..."'--- \ I -.... I I \. ...../ I - ........... __." ......... J I \ 429 ...J I "..: \ ...I 549 I • r-----\ I :'I • ' 485 \ 1 \ \......_LI ----- -J 'I 1 \\ , \ r----....- ,.1\ ---~'\, \" 8 439 ,Data from Energy .Primer.....,....~469o !100I 200miles2On the map find the greatest average amount of energy from the sun.The least: callcm 2 cal/cm2. Find a place near you on the map. Suppose you had a perfect 1000surface. How many calories (cal) could you collect a day in that2cm energyplace?3. You need to eat 2200 to 2500 kilocalories of food every day. Would your surfacein #2 collect this much energy?collecting4. A calorie is the amount of heat needed to raise the temperature of 1 gram of water by 1celsius degree. If the calories for one day in 1/2 could all be used; how many celsiusdegrees would the temperature of 1 kilogram of water be raised?5. All the energy used from coal, gas and so forth amounts to that given off by burning7,800,000,000 metric tonnes of coal. This amount is only .0047. of the energy wereceive from the sun. We receive the equivalent of how many metric tonnes of coal insun-energy every year?DATA FROM: Energy Primer, Copyright © 1974 Portola InstitutePermission to use granted by Portola Institute 243