**Question 15 2.2**

In dry air, the temperature decreases by about 0.65 degrees celsius for each 100m increase.

A) the temperature in Red Deer, Alberta, is 10 degrees celsius on a dry day. What is the temperature outside an aircraft 2.8km above the city?

B) the temperature outside an aircraft 1600m above Red Deer is -8.5 degrees celsius. What is the temperature in the city?

**Answers:**

First of all you must know how many

**m**go into**Km. ( 1****m = 0.001km)****A)**2.8Km is converted to 2800m, so there are 28/100 in 2800m. For every 100m the temperature decreases by 0.65 degrees celsius, so to show this we have to multiply 0.65x28= 18.2

so because it is 10 degrees celsius in the city if you take away 18.2 degrees because it decreases when you are above the city the temperature will be -8.2 degrees celsius outside the aircraft. The temperature outside the aircraft will be -8.2 degrees celsius.

You should start off by understanding

**Km**eqivalent to a**m (0.001Km**=**1m)****B)**the temperature outside of an aircraft that is 1600m above the city is -8.5 degrees celsius . If you were to go closer to the city the temperature would increase every 100m by 0.65 degrees celsius. there are 16/100m in 1600m so you multiply 0.65x16= 10.4 , next you add -8.5 + 10.4 to get to a temperature of 1.9 degrees celsius, so the temperature in the city will be 1.9 degrees celsius.

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