chapter2gh - Chapter 2 Heating Earth's Surface and...

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1 Chapter 2 Heating Earth’s Surface and Atmosphere I. Earth–Sun Relationships A. Earth’s 2 Principal Motions 1. Rotation : spinning about the axis 2. Revolution : orbit around the sun Revolution a. Perihelion :earth closest to sun b. Aphelion :earth farthest from sun B. The seasons - result from variations in the intensity (or amount) of solar radiation striking the earth - Height of noon sun changes - Length of day changes Sun Angle - influence intensity of solar radiation Sun Angle - influence distance traveled through atmosphere PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
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2 C. Earth’s Orientation 1. Plane of the ecliptic = plane of earth’s orbit around the sun 2. Inclination of the axis = tilted 23.5 degrees C. Earth’s Orientation Circle of illumination D. Solstices and equinoxes Circle of illumination Temperature Data at Different Latitudes - annual temperature range increases with latitude - earth-sun geometry is not the only control II. Energy, Heat, and Temperature Universe = composed of matter and energy Energy = the capacity to do work (move matter) A. Forms of energy 1. Kinetic energy: energy of motion ( 1/2 mv 2 ), atomic level 2. Potential energy: potential to do work ( ρ gh ) PDF Created with deskPDF PDF Writer - Trial :: http://www.docudesk.com
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chapter2gh - Chapter 2 Heating Earth's Surface and...

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