2017 Mod3 Flashcards
Define the following terms:
A. Atmosphere
The mass of air surrounding a planet
B. Atmospheric pressure
The pressure exerted by the atmosphere on all objects within it
C. Barometer
An instrument used to measure atmospheric pressure
D. Homosphere
The lower layer of earths atmosphere, which exists from ground level to roughly 80 km (50 miles) above sea level
E. Heterosphere
The upper layer of earths atmosphere which exists higher than roughly 80 km above sea level
F. Troposphere
The region of the atmosphere that extends from ground level to roughly 11 km (7 miles) above sea level
G. Stratosphere
The region of the atmosphere that spans attitude of 11 km to 48 km (30 miles)
H. Mesosphere
The region of the atmosphere that spans altitudes of 48 to 80 km (50 miles)
I. Jet streams
Narrowband of a high – speed winds that circle the earth blowing from west to east
J. Heat
Energy that is transferred as a consequence of temperature differences
K. Temperature
A measure of energy of random motion in a substances molecules
L. Thermosphere
The region of the atmosphere between altitude of roughly 80 km and 460 km
M. Exosphere
The region of the atmosphere above an altitude of roughly 460 km
N. Ionosphere
The region of the atmosphere between the altitude of roughly 65 km in 333 km where the gases are ionized
Suppose the earths atmosphere contain twice the number of molecules then it does today. Would the atmospheric pressure be greater than, equal to, or less than it is now?
It would be greater than