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Wind (mph) Calm 40 35 30 25 5 31 25 19 10 15 36 34 27 21 32 25 20 30 25 29 30 28 3.5 28 40 27 5310 19 17 23 16 9 22 15 8 21 14 7 20 13 6 11 Wind Chill Chart Temperature (°F) 50 -5 -10 15 20 25 30 35 40 45 -40 -46 52 57 -63 20 15 10 13 7 1 -5 -11 -16 22 -28 -34 -4 -10 -16 22 -28 -35 -41 -47 -53 6 -7 -13 19 -26 -32 -39 -45 -51 -58 4 -9 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81 3 -11 -17 -24 -31 -12 19 -26 -33 1 -37 -44 -51 -58 -64 -71 -78 -84 -39 -46 -53 -60 -67 -73 -80 -87 -41 -48 -55 -62 -69 -76 -82 -89 -43 -50 -57 -64 -71 -78 -84-91 0 -7 -14 -21 -27 -34 -1 -8 -15 -22 -29 -36 9 MONGST 3 0 -2 4 -S -59 -66 -72 -64 -71 -77

Wind (mph) Calm 40 35 30 25 5 31 25 19 10 15 36 34 27 21 32 25 20 30 25 29 30 28 3.5 28 40 27 5310 19 17 23 16 9 22 15 8 21 14 7 20 13 6 11 Wind Chill Chart Temperature (°F) 50 -5 -10 15 20 25 30 35 40 45 -40 -46 52 57 -63 20 15 10 13 7 1 -5 -11 -16 22 -28 -34 -4 -10 -16 22 -28 -35 -41 -47 -53 6 -7 -13 19 -26 -32 -39 -45 -51 -58 4 -9 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81 3 -11 -17 -24 -31 -12 19 -26 -33 1 -37 -44 -51 -58 -64 -71 -78 -84 -39 -46 -53 -60 -67 -73 -80 -87 -41 -48 -55 -62 -69 -76 -82 -89 -43 -50 -57 -64 -71 -78 -84-91 0 -7 -14 -21 -27 -34 -1 -8 -15 -22 -29 -36 9 MONGST 3 0 -2 4 -S -59 -66 -72 -64 -71 -77

Applications and Investigations in Earth Science (9th Edition)
Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
Problem 1LR
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Calm 40 25 15 10 $ 0-5 10 15 20 25 30 35 40 45 -11 -16 22 -28 -34 -40 -46 52 57 -63 5 36 19 7 1 -5 -10 -16 -22 10 34 15 3 -4 -28 -35 -41 -47 -53 -59 -66 -72 15 32 19 13 0 -7 -13 19 -26 17 11 -2 -9 20 30 25 29 23 16 9 4 -11 30 28 22 15 8 -S 3.5 28 14 7 0 -32 -39 -45 -51 -58 -64 -71 -77 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81 -17 -24 -31 -37 -44 -51 -58 -64 -71 -78 -84 -12 19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87 -14 -21 -27 -34 -41 -48 -55 -62 -69 -76 -82 -89 -15 -22 -29 -36 -43 -50 -57 -64 -71 -9 -16 -23 -30 -37 -44 -51 -58 -65 -72 -79 -3 -10 -17 -24 -31 -38 -45 -52 -60 -67 -74 -81 55 25 -3 -11 18 -25 -32 -39 -46 -54 60 25 17 10 3 -4 -11 -19 -26 -33 -40 -48 -55 40 27 20 13 6 -1 -78 -84-91 -86 -93 45 26 19 12 S -2 50 26 4 -88 -95 4 -61 -68 -75 -82 -85 -97 -62 -69 -76 -84 91 -98 Wind (mph) Questions: 1. 2. 3. 35 4. 568987 5. 31 6. 27 25 21 19 18 30 25 21 219 Wind Chill Chart Temperature (°F) 11 20 13 9 6 Effective 11/01/01 The NWS Wind Chill Temperature (WCT) Index uses advances in science, technology, and computer modeling to provide an accurate, understandable, and useful formula for calculating the dangers from winter winds and freezing temperatures. The index does the following: 3 1 • Calculates wind speed at an average height of 5 feet, the typical height of an adult human face, based on readings from the national standard height of 33 feet, which is the typical height of an anemometer . Is based on a human face model -7 -8 . Incorporates heat transfer theory based on heat loss from the body to its surroundings, during cold and breezy/windy days - Lowers the calm wind threshold to 3 mph - Uses a consistent standard for skin tissue resistance . Assumes no impact from the sun, i.e., clear night sky. 10 minutes Frostbite Times Wind Chill (°F) = 35.74 +0.6215T-35.75(V0.16) + 0.4275T(V⁰.16) Where, T= Air Temperature (°F) V- Wind Speed (mph) 10 minutes 5 minutes Identify the apparent temperature when the air temperature is 15 °F and the wind speed is 45 mph. Identify the apparent temperature when the air temperature is -25 °F and the winspeed is 20 mph. - How long will it take for frostbite to develop in these conditions? Describe what frostbite is and how it develops. How can frostbite be prevented? How has your opinion of the wind chill factor changed?
Transcribed Image Text:Calm 40 25 15 10 $ 0-5 10 15 20 25 30 35 40 45 -11 -16 22 -28 -34 -40 -46 52 57 -63 5 36 19 7 1 -5 -10 -16 -22 10 34 15 3 -4 -28 -35 -41 -47 -53 -59 -66 -72 15 32 19 13 0 -7 -13 19 -26 17 11 -2 -9 20 30 25 29 23 16 9 4 -11 30 28 22 15 8 -S 3.5 28 14 7 0 -32 -39 -45 -51 -58 -64 -71 -77 -15 -22 -29 -35 -42 -48 -55 -61 -68 -74 -81 -17 -24 -31 -37 -44 -51 -58 -64 -71 -78 -84 -12 19 -26 -33 -39 -46 -53 -60 -67 -73 -80 -87 -14 -21 -27 -34 -41 -48 -55 -62 -69 -76 -82 -89 -15 -22 -29 -36 -43 -50 -57 -64 -71 -9 -16 -23 -30 -37 -44 -51 -58 -65 -72 -79 -3 -10 -17 -24 -31 -38 -45 -52 -60 -67 -74 -81 55 25 -3 -11 18 -25 -32 -39 -46 -54 60 25 17 10 3 -4 -11 -19 -26 -33 -40 -48 -55 40 27 20 13 6 -1 -78 -84-91 -86 -93 45 26 19 12 S -2 50 26 4 -88 -95 4 -61 -68 -75 -82 -85 -97 -62 -69 -76 -84 91 -98 Wind (mph) Questions: 1. 2. 3. 35 4. 568987 5. 31 6. 27 25 21 19 18 30 25 21 219 Wind Chill Chart Temperature (°F) 11 20 13 9 6 Effective 11/01/01 The NWS Wind Chill Temperature (WCT) Index uses advances in science, technology, and computer modeling to provide an accurate, understandable, and useful formula for calculating the dangers from winter winds and freezing temperatures. The index does the following: 3 1 • Calculates wind speed at an average height of 5 feet, the typical height of an adult human face, based on readings from the national standard height of 33 feet, which is the typical height of an anemometer . Is based on a human face model -7 -8 . Incorporates heat transfer theory based on heat loss from the body to its surroundings, during cold and breezy/windy days - Lowers the calm wind threshold to 3 mph - Uses a consistent standard for skin tissue resistance . Assumes no impact from the sun, i.e., clear night sky. 10 minutes Frostbite Times Wind Chill (°F) = 35.74 +0.6215T-35.75(V0.16) + 0.4275T(V⁰.16) Where, T= Air Temperature (°F) V- Wind Speed (mph) 10 minutes 5 minutes Identify the apparent temperature when the air temperature is 15 °F and the wind speed is 45 mph. Identify the apparent temperature when the air temperature is -25 °F and the winspeed is 20 mph. - How long will it take for frostbite to develop in these conditions? Describe what frostbite is and how it develops. How can frostbite be prevented? How has your opinion of the wind chill factor changed?
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