Structure Of The Atmosphere Flashcards
What is Stefan’s Law?
Any body above 0 degrees Kelvin radiates as a black body
What is Wien’s Law?
High temperatures mean long wavelengths and Low temperatures mean short wavelengths
What is the specific heat capacity of a surface?
The amount of heat energy needed to rise a bodies temperature by a set amount
What is the environmental lapse rate?
6.5 degrees C / km
What is density?
Mass per unit Volume
What is pressure?
Force per Unit Area
What is absolute zero?
The lowest theoretically possible temperature
-273 degrees C
0 degrees Kelvin
4 methods of Heat Transfer
- Conduction
- Convection
- Advection
- Latent Heat
Which clouds occur when there is free convection?
Cumuliform
Which clouds occur when there is forced convection?
Stratiform
Why are lapse rates important?
They link the rate of temperature change/range with height
2 Features of Dense Air
Cold and Dry
2 Features of Less Dense Air
Warm and Moist
What is another word for a density boundary?
A front
What is the Hydrostatic Relationship?
Height and Pressure Relationship
3 Units of Pressure
hPa, mb and inches of Mercury
As height increases, pressure……..
Decreases
What is the difference between High and Low Pressure?
High Pressure indicates a high mass and this forces air DOWN where as Low Pressure indicates a low mass and this forces air UP
What is a black body? And how does black body radiation occur?
A theoretical object that emits electromagnetic radiation with efficiency.
Black body radiation occurs as a result of incoming solar radiator above absolute zero
What is the mean pressure ?
1,000 hPa
What is the standard atmospheric pressure at 15 degrees C?
1,013 hPa
