# GEOG 103 - Week 2 (Radiation)

 List the electromagnetic spectrum from the shortest wavelength to longest (9) 1. Gamma rays2. X-rays3. Ultra-violet4. Visible light5. Near infrared6. Shortwave infrared7. Thermal infrared8. Microwave9. Radio waves What are the colors of visible light from shortest wavelength? 1. Violet2. Indigo3..Blue4. Green5. Yellow6. Orange7. Red ROY G BIV backwards What is the conversion for Kelvin to Celsius? K = °C + 273.15 What is absolute zero? The temperature at which no energy is radiated this is 0 K or -273.15 °C What is the conversion from Celsius to Fahrenheit? °F = (°C x 1.8) + 32 What is the conversion from Fahrenheit to Celsius? °C = (°F - 32)/1.8 What is Wien's displacement law? Give the formula The relationship between wavelength and temperature ♤max = C/T ♤max - wavelength of radiated energyC - constant (2897 um K)T - absolute (K) temperature Wray is Stefan-Boltzman Law? Explanation and equation The relationship of intensity of emitted energy to absolute temperature E = €○T4 (power of 4) E - total emitted energy€ - surface emissivity (assume 1.00)○ - Stefan-Boltzman's constant 5.67 x 10 to the -8 times Wm to the-2 times K to the -4)T - absolute temperature What is the chemical composition of the atmosphere? 4 78% Nitrogen21% Oxygen0.9% Argon 0.04% Carbon Dioxide How is the atmospheric profiles divided? (3) The atmospheric profile can be divided into shells (layers) based on 1. Composition: Homosphere and Heterosphere2. Temperature: Troposphere, Stratosphere, Mesosphere and Thermosphere3. Function: Ozonosphere and Ionosphere Describe the Homosphere and Heterosphere Both make up the composition layer of the atmospheric profile. The homosphere is the inner atmosphere where gases are evenly blended. The heterosphere is the outer atmosphere whereby gases are sorted by gravity and appear in layers Describe the four temperature layers of the atmosphere? 1. Troposphere: from the surface to 18 kilometers contains 90% of the mass of the atmosphere2. Stratosphere: 18 to 50 kilometer altitude Kittinger vs Baumgartner 3. Mesosphere: 50 to 80 kilometer altitude4. Thermosphere: from 80 kilometers outwards roughly same as the heterosphere Describe the functional layers of the atmosphere 1. Ozonosphere: Layer exists within the Stratosphere. Ozone (O3) within this layer absorbs UV energy and converts it to heat energy 2. Ionosphere: Same altitude as Mesosphere and ThermosphereThis layer absorbs cosmic rays, gamma rays, x-rays and some UV rays What happens to insolation? 3 things 1. Transmitted: the energy passes through the atmosphere 2. Redirected in several ways including being scattered and reflected3. Absorbed: What is scattering? When light bounces back from an object that is smaller than the wavelength of light in a different direction and intensity. What is refraction? When light is bent as it enters a medium where its speed is different What is reflection? When light bounces back from an object in the same direction with the same intensity. Albedo of an object determines the percentage of insolation that is reflected. What is the average albedo of the earth surface? 31% That means that 69% of the suns rays are absorbed. What is the first law of thermodynamics? Law of conservation of energy: energy is lost during one process must equal the energy gained during another What is heat? Heat is energy in the process of being transferred from one object to another because of temperature difference. After heat is transferred, it is stored as internal energy What are the four ways in which heat can be transferred 1. Conduction - molecule to molecule transfer2. Convection - energy transferred by movement (vertical)3. Radiation - energy traveling through air or space4. Latent heat - phase changes What is the atmospheric greenhouse Delays transfer of heat from Earth into space What is the calculation for Net Radiation (Surface energy)? Q* = (Kdown - Kup) + (Ldown - Lup) Kdown = incoming isolating Kup = reflected insolationLdown = incoming longwave radiationLup = outgoing longwave radiation what is the calculation for albedo? a = Kup / Kdown AuthorMissionMindhack ID326248 Card SetGEOG 103 - Week 2 (Radiation) DescriptionGEOG 103 - Week 2 (Radiation).txt Updated2016-12-02T02:53:36Z Show Answers