Ozone layer - Study guides, Class notes & Summaries
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution.
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EPA 608 Core Test Sample Questions and Answers Latest 2023 with complete solution. 
As of what date did it become unlawful to release Class 1 and Class II 
refrigerants to the atmosphere? 
a. July 1, 1992 
b. July 1, 1993 
c. November 14, 1994 
d. January 1, 1996 Ans a. July 1, 1992 
What is the ozone layer and why is it important to us on Earth? 
a. Thin layer of R-22 in the atmosphere that filters UV. 
b. Protective shield for Earth from the sun's harmful ultraviolent (UV) 
rays in the strato...
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EPA 608 CORE Exam Questions and Answers (2022/2023) (Verified Answers) Graded A+
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EPA 608 CORE Exam Questions and Answers (2022/2023) 
(Verified Answers) Graded A+ 
What characteristic or characteristics of CFCs make them more likely than other 
chlorine compounds to reach the stratosphere? Dont disolve iin water 
Each chlorine atom in the stratosphere can destroy how many ozone molecules? 
100,000 ozone molecules 
Which refrigerant contains a CFC? 
R500, R12, R113 or R11? Theyre all CFC's 
HYDROCHLORIC FLORICCARBON (HCFC) refrigerant contain? Hydrogen, 
chlorine, flouri...
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WGU D199 Exam Questions and Correct Answers
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WGU D199 Exam Questions and Correct Answers 
in the last 10,000 years: - Answer-humans began modifying the land surface for growing food with advent of agricultural revolution 
 
the agricultural revolution roughly - Answer-coincides with a warm interglacial period that began about 11,700 years ago which is called the HOLOCENE era (warm stable climate) 
 
the last 270 years of the holocene ushered into the - Answer-INDUSTRIAL REVOLUTION when climate pollution began to increase dramatically 
 
th...
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EPA Section 609 Questions With Complete Solutions
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A refillable refrigerant cylinder must not be filled above ______ of its full capacity. correct answer: 80% 
 
Ozone layer absorbs and scatters ________ from the sun correct answer: Ultraviolet light 
 
An award of up to ______ may be paid to a person supplying information that leads to a penalty against a technician who is intentionally venting. correct answer: $10,000 
 
Since ________, it is no longer legal for CFCs to be manufactured or imported into the United States correct answer: Jan...
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OZONE layer protection; CFC exam | Questions and Correct Answers Latest Update
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OZONE layer protection; CFC exam | 
Questions and Correct Answers Latest 
Update 
ozone construction exists as 3 basic forms - Answer - o - oxygen atom 
o2 - oxygen molecule 
o3 - ozone molecule - toxic, unstable gas, protects us from UV sunlight 
sunlight strikes o2 molecules and splits them, the floating o atoms will "float" and come into contact 
with o2 to form - Answer - o3- ozone molecule 
the stratosphere is approx. how far away above earths surface - Answer - 15 to 50 km 
normally ther...
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SAE 609 questions with correct answers
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The recovery process on an R-12 or R-134a A/C System should continue until a stable vacuum is held by the system for: - Answer 2 minutes 
 
A recycled refrigerant container has been checked and found to be above the given pressure limit for the ambient temperature 
Technician A says that the refrigerant container should be placed in a cooler storage area before use 
Technician B says that the vapor in the container should be slowly vented into a refrigerant handling unit 
who's right - Answer ...
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UPDATED EPA 608 QUIZLET (2023) questions with correct answers
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the state of the refrigerant entering the metering device is? - Answer A subcooled high pressure liquid. 
 
what type of refrigerant is used in VERY high-pressure appliances? - Answer R-503 
 
what type of refrigerant is used in MEDIUM pressure appliances? - Answer R-500 
 
what type of refrigerant is used in HIGH pressure appliances? - Answer R-410A and R-22 
 
what device is located at the END of the liquid line? - Answer The expansion device. 
 
what type of refrigerants are the LEA...
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OZONE layer protection; CFC exam Questions and correct solutions
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OZONE layer protection; CFC exam Questions and correct solutions 
ozone construction exists as 3 basic forms 
 
sunlight strikes o2 molecules and splits them, the floating o atoms will "float" and come into contact with o2 to form 
 
the stratosphere is approx. how far away above earths surface 
normally there is a balance between the ___________ and ___________ of o3 
 
o3 is stratosphere is essential to life and referred to as.. 
o3 in the stratosphere is destroyed when it combines with...
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EPA 608 Core Questions and Answers Already Passed
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Where is the stratosphere? 10 to 30 miles 
Where is ozone located? stratosphere 
What does an ozone molecule consist of? 3 oxygen atoms 
The ozone layer protects us from... ultraviolet radiation 
The ozone layer helps to maintain... stable earth temperatures 
Depletion of ozone causes... crop loss, eye disease, skin cancer, reduced marine life, 
deforestation, increased ground level ozone. 
What type of refrigerants, when released into the atmosphere, ca
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SAE 609 Questions and Answers 100% Pass
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SAE 609 Questions and Answers 100% Pass 
The recovery process on an R-12 or R-134a A/C System should continue until a stable vacuum is held by the system for: 2 minutes 
A recycled refrigerant container has been checked and found to be above the given pressure limit for the ambient temperature 
Technician A says that the refrigerant container should be placed in a cooler storage area before use 
Technician B says that the vapor in the container should be slowly vented into a refrigerant handling...
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