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## Ch.5:Temperature

by: Alexia Gallien

73

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4

# Ch.5:Temperature 2050

Alexia Gallien
LSU
GPA 2.75
Geography
No professor available

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Lecture is on land-water differences, temperature scales,and temperature controls.
COURSE
Geography
PROF.
No professor available
TYPE
One Day of Notes
PAGES
4
WORDS
KARMA
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## Popular in Geography

This 4 page One Day of Notes was uploaded by Alexia Gallien on Thursday September 25, 2014. The One Day of Notes belongs to 2050 at Louisiana State University taught by a professor in Fall. Since its upload, it has received 73 views. For similar materials see Geography in Geography at Louisiana State University.

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Date Created: 09/25/14
Ch 5 Temperature Outline 0 Defining and measuring temperature 0 Temperature scales 0 Principal temperature controls 0 LandWater heating differences I What is temperature a A measure of the sensible heat energy present in the atmosphere and other media b Indicates the average kinetic energy of individual molecules within a substance c Typically measure with a thermometer of thermistor and almost always measure in unites of degrees At absolute 0 cold temperature all molecular energy ceases to exist Temperature is measure on three different scales LOOK FOR THAT TEMP CHART o Kelvin o Celsius will be discussed in this course KNOW THIS 0 Fahrenheit II Kelvin Scale degreeK a Developed by Lord William Thomson Kelvin Scottish mathematician and physicist b Known as the quotAbsolute Scalequot c Odegrees K is absolute zero d At absolute zero al molecular motion ceases e No negative values f 100degrees K between meltfreeze point and boilsteam point Ill Celsius Scale degreeC a Developed by Anders Celsius in 1742Swedish astronomer b Aldo known as the centigrade scale c Odegrees freezemelt point of water d 100degrees boisteam point of water e 100degrees separates freezemelt and boilsystem point f Absolute zero 273 degrees C IV Fahrenheit Scale degreeF a Developed by Daniel G Fahrenheit in 1714 German physicist b Boiling point of water 212 degreeF c 32degreeF freezemelt point of water d 100degreeC boilsteam point of water e Absolute zero 4594 degreeF V Temperature a Measure with thermometer in shade i Maximum Thermometer Mercury in Glass freezes at 40 degreesF ii Minimum Thermometer Alcohol in Glass Freezes at 200 degreesF VI Daily Temperature a Maximum Temp b Minimum Temp c Average of Mean Temp r Does not always happen the same way Geography 2050 Page 1 VII Diurnal Temp Variation or Diurnal Temp Range a Difference between daily maximum and daily minimum temp 39 Has something to do with Latent Heat VIII MonthyAverageTemp a Red average monthly maximum b Bue average monthly minimum IX Principle Temp Controls a Latitude i Determines the seasonal variations in sun angle and day length which in turn determines the seasonal variation in solar insolation II If you live closer to the poles the sun angle changes dramatically from 0 to 90 D Temp peaks in Jun JulyAugust months El Southern hemisphere winter is when we have OUR summer b Altitude i Because temperature decreases with increasing altitude in the troposphere ii Cooler temp at a higher altitude iii Approximately III 35 degrees F1000 ft D 64 degrees Celsius per 1000 meters iv 2 locations one colder one warmer v High Altitude cooler vi Low Atitude warmer c Cloud Cover i Depends on location and season but ii Clouds usually decreases maximum daily temperatures iii And increase minimum daily temp iv When its cloudier during the day it is usually cooler than if there were not clouds v High albedo for clouds white 0 Reflect a lot of insolation away from the surface of clouds At night clouds keep temp warmer than if the skies were clear I No insolation just longwaves d Land Water heating differences i Factors I Evaporation a Latent heat i Coming out of water body feels cold water evaporates from body causing your body to get colder II Transparency a lnsolation hitting surface o ground heats up first layer of ground successively heats up the lower layer by conduction transfer of energy III Specific Heat IV Movement a Land is not moving very much water is churning waves wind V Ocean Currents VI Sea Surface Water has a greater specific heat than land X Ocean Currents look in book XI Sea Surface Temperatures 0 Sun angles changes very little o At the poles it goes from 0 to as high as it does during solstices o Warmer spot on the earth where the oceans are the warmest XII Marine Influence climate look in book Geography 2050 Page 2 XIII Continental VS Marine on a Global Scale a Isotherms look in book for the chart Isotherms in the winter will bend over North America In the winter b In the winter the ocean is warmer than the continent i Because as the winter approaches it takes linger for the ocean to cool down Vice versa c Annual temp i Difference between the warmest temp ad lowest temp at every location on earth ii The highest annual temp range is 60 degree change in temp Siberia Northeast Asia one of coldest places on earth iii Very little change in southern hemisphere III Because most ofthe land on earth is in the northern hemisphere iv There is one area where the temp range is 20 degrees v It is different 40 degrees in central North America because we are located near around the Tropics the sun angle is different here vi Little change in temp near the equator3 degrees actually XIV Isothermal Map a Isotherm Line on a map that connects points of equal temperature b How to read one look in book for one like on the news during weather time Different temps Around the different states XV Global temperature patterns in Celsius look in book a As you move away from the equator temperature drops b Subsolar point in January it is very close to the tropic of Capricorn XVI Global Temp patterns in Farenheit a Warmest areas of the planet are north XVII Global temp Patterns and the Thermal Equator look in book a Know what Thermal Equator is look in book Picture on phone for July model Warmest point on earth is nearest equator Point connecting the warmest places of earth by longitude Continental Marine influence in south america temp drops by Andes Mts January In July are pretty much normal I Oceans in summer will be coolerthan the land XVIII Continental Pattern of Isotherms during Summer a Poleward up toward North away from equator b In summer land will heat up faster than the water I Isotherms will bend poleward I Opposite to southern hemisphere XIX Continental Pattern of Isotherms during Winter a Most the that part of America north is covered in snow b Isotherms bend toward the equator c If North America was In southern hemisphere it would bend upward though XX Wind chill Temp Index Apparent temperature a Placed on the actual temp b Wind chill is not actual temp i If the degree is 30 and the wind chill is 25 a thermometer will show 30 degrees c FrostBite look in book I Slows down circulation of blood I Losing heat and not absorbing the cold d Wind chill is a factor that just tells us what it feels like not what it really is Q Fact if you have a thermometer and it reads 30 degrees F the wind chill will be different 9 HEPPPquot Geography 2050 Page 3 but it is still 30 degrees it will just feel colder than 30 r Say 2 thermometers were both reading 40 degrees I Take one out on a windy day D This thermometer will reach 20 degrees a lot fasterthan on a calm day I The other on a calm day D Thermometer will reach the temp much slower Warmer to colder Conduction I More conduction on a windy day XXI Heat Index a The temp outside IS the temp outside If its high humidity then it will feel like 95 degrees F when it is actually 90 degrees F b c If humidity is low then it will actually feel like the temp it really is d Might be 90 but feel like 100 degrees e If there is water vapor in the air it will feel a lot warmer than if the air is dry Geography 2050 Page 4

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