document.write( "Question 1144785: As dry air moves upward, it expands and, in so doing, cools at a rate of about 1oC for each 100-meter rise, up to about 12 km. If the ground temperature is 10oC on the ground, what range of temperatures can be expected if an airplane takes off and reaches a maximum height of 4 km? (1 km = 1000 meters \n" ); document.write( "

Algebra.Com's Answer #765957 by ikleyn(52777) $\"\"$ $\"About$

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document.write( "4 kilometers is 40 times 100 meters.\r\n" );
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document.write( "So, the air temperature at the height of 4 km is 40 degrees of Celsius below than 10 degrees of Celsius.\r\n" );
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document.write( "ANSWER.  At the height of 4 km, the air temperature is 10 - 40 = -30 degrees of Celsius, under given conditions.\r\n" );
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