Introduction*to*our*home*planet*Earth*Mars:&•"Highest"T:"about"35°F"(2°C)"•"Winter"T:"about";200°F"(;125°C)">>"cold"enough"to"freeze"carbon"dioxide"(CO2)"Venus:&•"~"30%"closer"to"the"Sun"than"Earth"•"Atmosphere:"96%"CO2"•"Clouds"of"sulfuric"acid"•"T"~&900"°F"(480°C)"Earth:&•"atmosphere:"0.04%"CO2"•"liquid"water,"solid"water"(ice),"water"vapor"•"a"reasonable"climate"•"recognizable"form"of"life."•"T"~"59°F"(or"15°C)"Life*exists*by*water’s*consent.*How*we*manage*rivers*affects*not*only*our*own*well>being,*but*also*the*health*of*other*species."The"Scientific"Method"•""Provides"a"systematic"way"to:"–""Find"answers"to"questions"–""Solutions"to"problems"– Evidence"to"support"or"refute"ideas"– Scientific"Method"Steps"– 1)&&OBSERVATION&of"a"problem/question"to"be"answered"– 2)&&FORMULATE&A&HYPOTHESIS&•"" Hypothesis"should"explain"observations/data"– •""Multiple"working"hypotheses"3)&&TEST&the"hypothesis"– •""– FOUR"RULES"for"testing"a"hypothesis"– 1)"" Results"must"be"reproducible"– 2)"" Explains"all"related"observations"– 3)"" No"contradictions"to"other"observations"and"scientific"principles"– 4)"" Internally"consistent"– "– The"Scientific"Method"– •"Once"a"hypothesis"has"passed"many"tests"it"may"become"a"theory."– •"A"theory"is"a"scientific"idea"capable"of"– explaining"a"broad"range"of"observations"– and"is"supported"by"abundant"evidence."•""South"America"and"Africa"were"once"part"–
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