Integrated Science
Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 15, Problem 1PEA

If the distance between the city of Charleston, South Carolina, in the eastern United States and Morocco in northwestern Africa is about 6, 700 km, how long did it take the Southern Atlantic Ocean to open if the average rate of spreading has been 2.85 cm/yr using equation 2.1 from section 2.2?

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Earth's mass ia 6x10^24 kg and its radius is 6.4x10^6 m. What is the average mass density of Earth?  The density of the rocks compromising Earth's outermost layer (its "crust") ranges from 2000 to 3500 kg/m ^3. Based on your answer, what can you conclude about the material deep inside Earth's interior?
The density of atmospheric air varies with elevation (2), decreasing with increasing altitude. a) Using the date given in Table 2, obtain a relation for the variation of density (p) with elevation (2). Assume the earth to be a perfect sphere with a radius (r) of 6377 km and the thickness of the atmosphere is 25 km as illustrated in Figure 1. b) Calculate the density of atmosphere air at an elevation of 7000 m. Atmosphere thickness = 25 km Earth radius, r= 6377 km www 6381 were 6382 Table 2: Density of atmosphere related to earth radius. Radius r, km 6377 6378 6379 6380 6383 6385 6387 6392 6397 6402 *r=z+6377 km Find density of air a Earth surface Density p. kg/m³ 1.225 1.112 7 km 1.007 0.9093 0.8194 0.7364 0.6601 0.5258 0.4135 0.1948 0.08891 0.04008
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