GEO 211 1st Edition Lecture 5 Outline of Last Lecture I. Chapter 2- Energy: Warming the Earth and the AtmosphereA. Energya. Forms of energyb. Law of conservation of energy or the 1st law of thermodynamicsB. Temperaturea. Temperature scalesb. Conservation formulasC. Kelvin scaleD. Methods of Heat Transfera. Conductionb. ConvectionOutline of Current Lecture II. Chapter 2- Energy: Warming the Earth and the Atmosphere continuedA. RadiationB. Main sources of energya. Sunb. Earth’s crustC. Solar radiant energy is important for lifeD. Internal heat energy is important for geologic changesE. electromagnetic energy from the sunF. Wave is characterized by wavelength and frequencya. Wavelength diagramb. Frequencyc. Wavelength- Table of different types of wavelengths - Electromagnetic spectrum diagramG. Percentages of what the sun emitsCurrent LectureThese 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 continuedA. Radiation- transfer of heat in electromagnetic waves from the Sun to Earth- Can transfer through a medium or vacuumB. Main sources of energya. Sun- solar radiant energyb. Earth’s crust- internal heat energyC. Solar radiant energy is important for life- Ex: photosynthesis, energyD. Internal heat energy is important for geologic changes- Ex: Volcanic activitiesE. electromagnetic energy from the sun- Exhibit both electrical and magnetic properties- Travels to Earth as waves at the speed of light: 186,000 mi/secF. Wave is characterized by wavelength and frequencya. Wavelength diagramb. Frequency- number of wave crests in a secondc. Wavelength- distance between 2 successive wave crests1. Measured in micrometers in a second2. Micrometer= 0.000001md. Sun emits all different types of wavelengths:e. Emitted energy forms the electromagnetic spectrum of all possible wavelengthsG. Percentages of what the sun emits7%- ultraviolet, x-ray, gamma ray44%- visible light37%- near infrared12%- longer than
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