ERAU WX-201
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ERAU WX-201 43
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WX-201 Test 1 study guide latest updated 
Atmosphere 
is a mixture of gas molecules, microscopically small suspended particles of solid and liquid, and falling precipitation 
 
 
Meteorology 
is the study of atmosphere and the processes that cause what we refer to as the "weather" 
 
 
permanent gases 
those that form a constant proportion of the atmospheric mass 
 
 
Variable Gases 
those whose distribution in the atmosphere varies in both time and space 
 
 
Homosphere 
region from the earth...
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WX-201 Test 1 study guide latest updated 
Atmosphere 
is a mixture of gas molecules, microscopically small suspended particles of solid and liquid, and falling precipitation 
 
 
Meteorology 
is the study of atmosphere and the processes that cause what we refer to as the "weather" 
 
 
permanent gases 
those that form a constant proportion of the atmospheric mass 
 
 
Variable Gases 
those whose distribution in the atmosphere varies in both time and space 
 
 
Homosphere 
region from the earth...
WX201 Exam 2 Questions and Answers Graded A+ 
Stable 
If an object is displaced, it will respond in a manner than returns it to its original position 
 
 
Neutral Stability 
If an object is displaced it will remain at its new location 
 
 
Unstable 
If an object is displaced, it will continue to move away from its original position 
 
 
Positively Bouyant 
An air parcel is warmer than its environment it is what 
 
 
Negatively bouyant 
An air parcel is colder than its environment is what 
 
 
En...
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WX201 Exam 2 Questions and Answers Graded A+ 
Stable 
If an object is displaced, it will respond in a manner than returns it to its original position 
 
 
Neutral Stability 
If an object is displaced it will remain at its new location 
 
 
Unstable 
If an object is displaced, it will continue to move away from its original position 
 
 
Positively Bouyant 
An air parcel is warmer than its environment it is what 
 
 
Negatively bouyant 
An air parcel is colder than its environment is what 
 
 
En...
WX201 Exam 1 Exam with correct Answers Graded A+ 
A greenhouse gas is one that 
absorbs outgoing infrared radiation 
 
 
Which of the following is a permanent gas? 
Ozone (O3) 
Water Vapor (H2O) 
Nitrogen (N2) 
Carbon Dioxide (CO2) 
Nitrogen 
 
 
Which of the following gases absorbs ultraviolet light, protecting life on earth? 
Ozone 
 
 
T/F: Cold air can hold less water vapor than hot air 
F; Warm air can hold more water vapor 
 
 
Why have global stratospheric ozone concentrations decreased i...
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WX201 Exam 1 Exam with correct Answers Graded A+ 
A greenhouse gas is one that 
absorbs outgoing infrared radiation 
 
 
Which of the following is a permanent gas? 
Ozone (O3) 
Water Vapor (H2O) 
Nitrogen (N2) 
Carbon Dioxide (CO2) 
Nitrogen 
 
 
Which of the following gases absorbs ultraviolet light, protecting life on earth? 
Ozone 
 
 
T/F: Cold air can hold less water vapor than hot air 
F; Warm air can hold more water vapor 
 
 
Why have global stratospheric ozone concentrations decreased i...
WX201 Exam 1 (Units 1-4) Questions and Answers 
Aerosol 
In the atmosphere, tiny solid or liquid suspended particles of various compostion afe called: 
 
 
Photosynthesis 
Sinks of CO2 include 
 
 
Ozone (O3) 
Occurs at about 75,000 ft and absorbs UV rays 
 
 
Air can hold more water vapor when it is 
warm 
 
 
Meteorology is the study of: 
the atmosphere 
 
 
Since the turn of this century, CO2 in the atmosphere has: 
Been increasing in concentration 
 
 
The only substance near the earths surf...
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WX201 Exam 1 (Units 1-4) Questions and Answers 
Aerosol 
In the atmosphere, tiny solid or liquid suspended particles of various compostion afe called: 
 
 
Photosynthesis 
Sinks of CO2 include 
 
 
Ozone (O3) 
Occurs at about 75,000 ft and absorbs UV rays 
 
 
Air can hold more water vapor when it is 
warm 
 
 
Meteorology is the study of: 
the atmosphere 
 
 
Since the turn of this century, CO2 in the atmosphere has: 
Been increasing in concentration 
 
 
The only substance near the earths surf...
wx 201 test 2 erau questions and answers 
station pressure 
the actual air pressure computed at the observing station 
 
 
sea level pressure 
the standard level of pressure 29.92 inches 
 
 
ideal gas law 
the relationship PV=nRT, which describes the behavior of an ideal gas 
 
 
mercury barometer 
consists of a glass tube open at the bottom end and partially filled with mercury 
 
 
barometric pressure 
the pressure due to the weight of the atmosphere; also called air pressure or atmospheric p...
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wx 201 test 2 erau questions and answers 
station pressure 
the actual air pressure computed at the observing station 
 
 
sea level pressure 
the standard level of pressure 29.92 inches 
 
 
ideal gas law 
the relationship PV=nRT, which describes the behavior of an ideal gas 
 
 
mercury barometer 
consists of a glass tube open at the bottom end and partially filled with mercury 
 
 
barometric pressure 
the pressure due to the weight of the atmosphere; also called air pressure or atmospheric p...
WX 201 Test 1 Questions and Answers 
In the atmosphere 
Cold air sinks and warm air rises 
 
 
Weather 
State of the atmosphere with respect to wind, temperature, moisture, pressure, etc. 
 
 
Climate 
Average or generally prevailing conditions 
 
 
Most abundant gases 
Nitrogen (78), Oxygen (21), Argon (.93) 
 
 
Which gas has a variable concentration, dependent upon location? 
Carbon dioxide, methane, ozone, water vapor 
 
 
What are the most common greenhouse gases? 
CO2, Methane, Ozone 
 
 
...
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WX 201 Test 1 Questions and Answers 
In the atmosphere 
Cold air sinks and warm air rises 
 
 
Weather 
State of the atmosphere with respect to wind, temperature, moisture, pressure, etc. 
 
 
Climate 
Average or generally prevailing conditions 
 
 
Most abundant gases 
Nitrogen (78), Oxygen (21), Argon (.93) 
 
 
Which gas has a variable concentration, dependent upon location? 
Carbon dioxide, methane, ozone, water vapor 
 
 
What are the most common greenhouse gases? 
CO2, Methane, Ozone 
 
 
...
WX 201 HW1 Exam with complete solutions 
The only substance near Earth's surface that is found naturally in the current atmosphere as a solid, liquid, and a gas is 
water. 
 
 
The rate at which temperature decreases with increasing altitude is known as the 
lapse rate. 
 
 
Almost all of Earth's weather occurs in the 
troposphere. 
 
 
The word "weather" is defined as 
the condition of the atmosphere at a particular time and place. 
 
 
At night, when the weather is extremely cold and dry, ...
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WX 201 HW1 Exam with complete solutions 
The only substance near Earth's surface that is found naturally in the current atmosphere as a solid, liquid, and a gas is 
water. 
 
 
The rate at which temperature decreases with increasing altitude is known as the 
lapse rate. 
 
 
Almost all of Earth's weather occurs in the 
troposphere. 
 
 
The word "weather" is defined as 
the condition of the atmosphere at a particular time and place. 
 
 
At night, when the weather is extremely cold and dry, ...
WX 201 Final Exam with correct Answers 
Which of the following air masses is not typically seen in the U.S. in winter? 
Maritime polar 
Continental tropical 
Maritime tropical 
Continental polar 
Continental tropical 
 
 
The continental arctic (cA) air mass is usually produced at high latitudes by persistent: 
Radiational cooling 
 
 
It's January and you're in Portland, Oregon. The wind is blowing from the west at 10 knots and it's drizzling. What type of air mass are you likely experienci...
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WX 201 Final Exam with correct Answers 
Which of the following air masses is not typically seen in the U.S. in winter? 
Maritime polar 
Continental tropical 
Maritime tropical 
Continental polar 
Continental tropical 
 
 
The continental arctic (cA) air mass is usually produced at high latitudes by persistent: 
Radiational cooling 
 
 
It's January and you're in Portland, Oregon. The wind is blowing from the west at 10 knots and it's drizzling. What type of air mass are you likely experienci...
WX 201- Final Exam Study Set Questions and Answers 
How do red and blue light differ? 
The wavelength of red light is longer. (E1) 
 
 
Which gases are primarily responsible for the atmosphere greenhouse effect in Earth's atmosphere? 
Water vapor and carbon dioxide (E1) 
 
 
Much of the carbon dioxide found in earlier atmospheres is currently locked up in 
Carbonate rocks (E1) 
 
 
The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemis...
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WX 201- Final Exam Study Set Questions and Answers 
How do red and blue light differ? 
The wavelength of red light is longer. (E1) 
 
 
Which gases are primarily responsible for the atmosphere greenhouse effect in Earth's atmosphere? 
Water vapor and carbon dioxide (E1) 
 
 
Much of the carbon dioxide found in earlier atmospheres is currently locked up in 
Carbonate rocks (E1) 
 
 
The most important reason why summers in the Southern Hemisphere are not warmer than summers in the Northern Hemis...
WX 201 Final Exam Questions and Answers 
Chemicals called __ break down ozone molecules 
chlorofluorocarbons 
 
 
Since the turn of this century, CO2 in the atmosphere has: 
been increasing in concentration 
 
 
In a volume of air near the earth's surface, ____ occupies 78 percent 
and ____ occupies nearly 21 percent. 
Nitrogen, Oxygen 
 
 
Sinks of CO2 include 
photosynthesis 
 
 
The only substance near the earth's surface that is found naturally in the atmosphere as a solid, liquid, and a g...
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WX 201 Final Exam Questions and Answers 
Chemicals called __ break down ozone molecules 
chlorofluorocarbons 
 
 
Since the turn of this century, CO2 in the atmosphere has: 
been increasing in concentration 
 
 
In a volume of air near the earth's surface, ____ occupies 78 percent 
and ____ occupies nearly 21 percent. 
Nitrogen, Oxygen 
 
 
Sinks of CO2 include 
photosynthesis 
 
 
The only substance near the earth's surface that is found naturally in the atmosphere as a solid, liquid, and a g...