This activity is designed to show the relationships among altitude
or height above sea level, the density of the air, the temperature of
the air, and the pressure of the air. Because the atmosphere is
dynamic, these properties of matter are all interrelated. You will be
using AtmosModeler to accumulate and check your data.

4. Convert the following altitudes from meters to feet.
a) 1000 meters =
b) 2500 meters =

c) 6500 meters =

5. After converting your altitudes to feet, you can
calculate (or predict) the temperature at these altitudes by using
the following equation: **T = 59 - .00356 (h)**, where h =
altitude (in feet). Your temperatures will be in degrees F.
Calculate the temperature for each of the altitudes in Question
4.

a) temperature at 1000 meters =
b) temperature at 2500 meters =

c) temperature at 6500 meters =

6. Use AtmosModeler to check your answers. Click the "Metric"
units menu and change to "Imperial" to compute in English units.
Input each of the altitudes
(in feet). Compare your answers for temperature to the AtmosModeler
temperatures and explain how any differences may have
occurred.

a)
b)

c)

7. The temperature may now be used to calculate the
pressure of the air at each altitude. Using the equation **p =
2116 (T + 459.7 / 518.6)**^{5.256}^{ }where T =
degrees F and p = lbs/in^{2}, find the pressure that
corresponds to each of your temperatures.

a) pressure =
b) pressure =

c) pressure =

8. How does the pressure change compared to a change in
altitude?

9. Use a model or table to compare the change in
altitude, density, temperature, and pressure at the same time.
Include an explanation.