Shared Flashcard Set

Details

Weather-Temperature Ch. 0-3
Elements of Weather UNI
45
Other
Undergraduate 3
01/31/2011

Additional Other Flashcards

 


 

Cards

Term
Greenhouse effect
Definition
Needed to heat earth
not the cause of global warming
Term
Radiational balance
Definition
different in hemispheres because of water
Term
Kinetic energy vs Potential
Definition
Kinetic=hammer and nail
Potential=potential to do work
Term
Albedo
Definition
the fraction of light that is reflected by a body or surface
Term
Laws governing radiation
Definition
All matter emits radiation
hotter objects=more total energy per unit and shorter wave length of max radiation
Term
black bodies
Definition
perfect absorber/emitter of radient energy
Term
solar radiation
Definition
radiates in the visible spectrum, Most Intense
Term
direction of convection
Definition
vertical
Term
direction of advection
Definition
horizontal
Term
Convection
Definition
energy is transferred by the mass motion of groups of molecules resulting in transport and mixing of properties
Term
Conduction
Definition
energy is transferred by the direct contact of molecules
air=bad conductor=insulator
Term
Radiation
Definition
no medium to travel through
classified by wave length
Term
Heat
Definition
the energy that flows b/w two substances that do not have the same temp
Term
Temperature
Definition
measure of the average motion of atoms of molecules in a substance
Term
Forms of matter
Definition
solid
liquid
gas
made of atoms or molecules
all have motion
Term
earth tilt
Definition
23.5 degrees=seasons
Term
sun angle
Definition
Higher (in the sky) in summer
Lower in winter
Term
aphelion
Definition
152 mil km
Term
perihelion
Definition
147 mil km
Term
revolution
Definition
movement around another body
365 days (avg)
orbit~150mil km
147 mil km-perihelion-jan
152 mil km-aphelion-july
Term
Rotation
Definition
Movement on an axis
24hrs (avg)
all planets have rotation
Term
Growing Degree Days
Definition
Daily Mean-Plant Base Temp=GDD
Term
Cooling Degree Days
Definition
Daily Mean Temp-65F=CDD
Term
Heating Degree Days
Definition
65F-Daily Mean Temp=HDD
Term
Wind Chill
Definition
1941
Skin Does drop to wind chill index
exposed body parts lose heat at a rate equivalent to the wind chill temp
Term
Annual Temp Range
Definition
diff. of Cold and Warm months
Term
Annual Mean Temp
Definition
Avg of 12 monthly mean
Term
Monthly Mean
Definition
sum of daily means divided by the # of days of the month
Term
Daily Range
Definition
Diff of Max and Min
Term
Daily Mean
Definition
Max+Min divided by 2
Term
Isotherms
Definition
Lines of equal temp usually in 5-10 degree intervals
Term
How clouds affect temperature
Definition
energy reflects off clouds, back toward the sky during day (so cooler), back toward land at night (so warmer)
clearer days have wider temp range (warmer days and cooler nights)
Term
How Geographic location affects temp
Definition
more direct sunlight hits places near the equator therefore higher temps with smaller variation annually
Term
Differential Heating of Land vs. Water
Definition
Land heats quicker and shallower, water heats slower and deeper
Term
Bimetallic Thermometer
Definition
2 metals (usually brass and iron) welded together expand at different rates
Term
Radiometer
Definition
measures wave length, usually in the infrared satellites
Term
Electrical thermometer
Definition
measures change in resistance
Thermistor-uses ceramics
Thermo-couple-The difference in current b/w two wires
Term
Liquid-In-Glass Thermometer
Definition
most common
Mercury/Alcohol
M=-39C-356C
A=-117C-79C
Term
Difference b/w Fahrenheit, Celsius, and Kelvin
Definition
F=1.8C+32
K=C+273
Term
temperature
Definition
an object as that which determines the sensation of warmth or cold felt from contact w/ it
Term
Equinoxes
Definition
Spring=March 21-22
Autumnal=Sept 21-22
12 hrs of sunlight Everywhere
Term
winter solstice
Definition
(N Hemisphere)
Dec 21-22
Vertical rays of sunlight hit tropic of capricorn
s. Hemisphere gets most of the sunlight
Term
Summer solstice
Definition
(N. Hemisphere)
June 21-22
Vertical rays of sunlight hitting tropic of cancer
Farther north of equator=more hours of sunlight
Term
Thermosphere
Definition
80km and up
no defined upper limit
gases move at high speeds
few molecules
Term
Mesosphere
Definition
48-80 km up
coldest
Supporting users have an ad free experience!