chapter 3 Flashcards
What is the distance between successive wave crest and troughs
Wavelength
Number of wavecrests that pass a given point per second hertz, he. Inversely proportional to the wavelength
Wave frequency
What is the speed of electromagnetic radiation
300,000 KM/seconds 186,000 miles/seconds the speed of light
At a constant temperature it absorbs all radiation it receives and emits all the Energy it absorbs.
Perfect absorbs And perfect emitter
Surfaces approximate these for certain wavelengths of radiation
Blackbody
What is WI EN displacement law
Wavelength of most intense radiation emitted by a black body is inversely proportional to its absolute temperature
The Suns cooler visible surface. Much Cooler than interior:
Photosphere
What are sunspots
Cool areas on the sun surface accompanying bright area called faculae
What is chromisphere?
Sons atmosphere of superheated gases mostly H and He.
What solar corona?
The outermost portion of the suns atmosphere
When the north pole is tilted towards the sun the northern hemisphere receives or solar radiation which two seasons is this
This is spring or summer in the northern hemisphere
When the north pole is tilted away from the sun the northern hemisphere receives less solar radiation what seasons of this are this?
This is fall or winter in the northern hemisphere
The way the sun tilts towards or away from the earth north pole is called what
Inclination of Earth axis
What is the solar constant
Rate at which solar radiation falls on a surface located at the outer edge of the atmosphere oriented perpendicular to the incoming solar beam when earth is a mean distance from the sun
Solar radiation passing to the earths atmosphere interacts with what
Gases and aerosols via scattering reflections and and abroaption
So the radiation and the atmosphere: describe scattering
PArticles disperse solar radiation the scattering a blue violet light oxygen and nitrogen molecules this is why daytime sky is blue
Solar radiation in the atmosphere: describe reflection
Takes place at the interface between two media when the radiation striking interface is redirected backscattered a fraction of incident radiation back scatter by airborne particles or reflected by is surface is a albedo of that surface
What is an albedo
The reflection of energy scattered on earths surface is redirected to outerspace whistler visible energy is reflected from earth back into space
All surfaces have it not just earth
Solar radiation in the atmosphere absorption
It’s radiation to heat energy
What element has the highest albedo at the lowest solar altitude
Water global average oceanic albedo is 8%
Electromagnetic radiation can be defined as what
It is a transmitted through space or materials as waves solar radiation both electric and magnetic properties
What is the global solar radiation budget?
Earths surface principal recipient of solar heating and main source of heat for the atmosphere. Evident in critical profile of the troposphere.
