GEOG 2050 Chapter : Geog 2050 2 27
Document Summary
Temperature- average kenitic energy (motion) of molecules: heat measured in calories, raise temp of 1g water by 1 degree celsius, 1000 food calories=1 calorie. Temperature scales: figure 5. 2, fahrenheit (*f, celsius (*c, kelvin (k) Fahrenheit: developed by daniel gabriel fahrenheit in 1724 (german physicist, mercury-in-glass thermometer, water (h2o) at standard atmospheric pressure (atm, freeze/melt point 23* f, boiling point 212* f, 180* apart, used in us and belize. Celsius: developed by anders celsius in 1742 (swedish astronomer, also known as centigrade scale, water h2o at atm, 0* c=freeze/melt point, 100* c=boil/steam point, 100* separate, used worldwide. For official temperature readings: outdoors, white shelters, higher albedo. Louvered for ventilation: 1. 2 m above a grass surface, shade, daily or hourly. Temp sensors: thermistor, electrical resistance of semiconductor, resistance changes with temp, reports electronically, thermocouples, bimetallic sensors, ac thermostats. National weather service: hourly, daily summary statistics, most located at major airports, temperature and other variables.
