GEOG 2050 Lecture : Geography Lecture 9 27
Document Summary
Key concepts: temperature, heat, heat energy, absolute zero, celsius, fahrenheit, kelvin, mercury. Thermometer, alcohol thermometer, thermistor, daily mean temp. , monthly mean temp. , mean monthly temp. , annual temp. Range, annual mean temp. , sea surface temp. (sst) Temperature: heat= energy of molecular movement along gradient, temperature= average kinetic energy (motion) of molecules, heat is measured in calories, raise temp. of 1g water by 1 c, 1000 food calories= 1 calorie. Temperature scales: fig 5. 1, fahrenheit ( f, celsius ( c, kelvin (k) Fahrenheit: developed by daniel gabriel fahrenheit in 1724 (german physicist, mercury-in-glass thermometer, water (h20) at standard atmospheric pressure (atm, freeze/melting point (32 f, boiling point (212 f, 180 apart, used in belize and usa. Kelvin: developed by anders celsius in 1742 (swedish astronomer, aka centigrade scale, water at atm, 0 c= freeze/melting point, 100 c= boil/steam point, 100 c separate freeze from boil, used worldwide.
