GEO 211 1st Edition Lecture 5 Outline of Last Lecture I Chapter 2 Energy Warming the Earth and the Atmosphere A Energy a Forms of energy b Law of conservation of energy or the 1st law of thermodynamics B Temperature a Temperature scales b Conservation formulas C Kelvin scale D Methods of Heat Transfer a Conduction b Convection Outline of Current Lecture II Chapter 2 Energy Warming the Earth and the Atmosphere continued A Radiation B Main sources of energy a Sun b Earth s crust C Solar radiant energy is important for life D Internal heat energy is important for geologic changes E electromagnetic energy from the sun F Wave is characterized by wavelength and frequency a Wavelength diagram b Frequency c Wavelength Table of different types of wavelengths Electromagnetic spectrum diagram G Percentages of what the sun emits Current Lecture These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute II Chapter 2 Energy Warming the Earth and the Atmosphere continued A Radiation transfer of heat in electromagnetic waves from the Sun to Earth Can transfer through a medium or vacuum B Main sources of energy a Sun solar radiant energy b Earth s crust internal heat energy C Solar radiant energy is important for life Ex photosynthesis energy D Internal heat energy is important for geologic changes Ex Volcanic activities E electromagnetic energy from the sun Exhibit both electrical and magnetic properties Travels to Earth as waves at the speed of light 186 000 mi sec F Wave is characterized by wavelength and frequency a Wavelength diagram b Frequency number of wave crests in a second c Wavelength distance between 2 successive wave crests 1 Measured in micrometers in a second 2 Micrometer 0 000001m d Sun emits all different types of wavelengths e Emitted energy forms the electromagnetic spectrum of all possible wavelengths G Percentages of what the sun emits 7 ultraviolet x ray gamma ray 44 visible light 37 near infrared 12 longer than 1 5 m
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