Environmental Health and Safety
Exam 2025 Questions and Answers
100% pass
Environmental Health - ✔✔is the study and management of environmental conditions
that affect our health and well-being.
Environmental Hazards - ✔✔are those factors or conditions that increase the risk of
human injury,disease, or death.
Air Pollution - ✔✔is the contamination of the air by substances-gases,liquids,or solids in
amounts great enough to harm humans other living organisms or the ecosystem that
alter climate.
United States major sources are - ✔✔transportation
electric power plants fueled by oil and coal
industry primarily mills and refineries.
Primary Pollutants - ✔✔include those emanating directly from transportation power
and industrial plants and refineries
Examples of Primary Polluntants - ✔✔carbon monoxide carbon dioxide nitrogen oxides
Secondary Pollutants - ✔✔air pollutants formed when primary air pollutants react with
sunlight and other atmospheric components to form new harmful compounds.
Secondary Pollutants examples - ✔✔nitrogen dioxide nitric acid nitrate salts sulfur
trioxide sulfate salts
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, Photochemical smog - ✔✔haze or fog formed when air pollutants interact with sunlight
Industrial Smog - ✔✔haze or fog formed primarily
Ozone (O3) - ✔✔an inorganic material considered to be a pollutant in the atmosphere
because it harms human tissue, but considered beneficial in the stratosphere because it
screens out UV radiation.
- most dangerous air pollutant.
Breathing Ozone can result in what? - ✔✔variety of health problems even at low
levels,including chest pain,coughing throat irritation,congestion.
Thermal Inversion - ✔✔a condition that occurs when warm air traps cooler air at the
surface of the Earth
Clean Air Act of 1963 - ✔✔the federal law that provides the government with authority
to address interstate air pollution.
National Ambient Air Quality Standards - ✔✔standards created by the EPA for
allowable concentration levels of outdoor pollutants.
Environmental Protection Agency - ✔✔the federal agency primarily responsible for
setting,maintaining, and enforcing environmental
standards.
- empowered to regulate air quality and is authorized to levy fines against those who
violate the standards.
Criteria Pollutants - ✔✔the most pervasive air pollutants and those of the greatest
concern in the United States.
examples are sulfur dioxide,carbon monoxide,nitrogen oxides,ground-level ozone
Air Quality Index - ✔✔an index that indicates the level of pollution in the air and
associated health risk.
Greenhouse Gases - ✔✔atmosphere gases principally carbon dioxide
chloroflucarbons,ozone,methane,water vapor,and nitrous oxide, that are transparent to
visible light but absorb infrared radiation.
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
Exam 2025 Questions and Answers
100% pass
Environmental Health - ✔✔is the study and management of environmental conditions
that affect our health and well-being.
Environmental Hazards - ✔✔are those factors or conditions that increase the risk of
human injury,disease, or death.
Air Pollution - ✔✔is the contamination of the air by substances-gases,liquids,or solids in
amounts great enough to harm humans other living organisms or the ecosystem that
alter climate.
United States major sources are - ✔✔transportation
electric power plants fueled by oil and coal
industry primarily mills and refineries.
Primary Pollutants - ✔✔include those emanating directly from transportation power
and industrial plants and refineries
Examples of Primary Polluntants - ✔✔carbon monoxide carbon dioxide nitrogen oxides
Secondary Pollutants - ✔✔air pollutants formed when primary air pollutants react with
sunlight and other atmospheric components to form new harmful compounds.
Secondary Pollutants examples - ✔✔nitrogen dioxide nitric acid nitrate salts sulfur
trioxide sulfate salts
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 1
, Photochemical smog - ✔✔haze or fog formed when air pollutants interact with sunlight
Industrial Smog - ✔✔haze or fog formed primarily
Ozone (O3) - ✔✔an inorganic material considered to be a pollutant in the atmosphere
because it harms human tissue, but considered beneficial in the stratosphere because it
screens out UV radiation.
- most dangerous air pollutant.
Breathing Ozone can result in what? - ✔✔variety of health problems even at low
levels,including chest pain,coughing throat irritation,congestion.
Thermal Inversion - ✔✔a condition that occurs when warm air traps cooler air at the
surface of the Earth
Clean Air Act of 1963 - ✔✔the federal law that provides the government with authority
to address interstate air pollution.
National Ambient Air Quality Standards - ✔✔standards created by the EPA for
allowable concentration levels of outdoor pollutants.
Environmental Protection Agency - ✔✔the federal agency primarily responsible for
setting,maintaining, and enforcing environmental
standards.
- empowered to regulate air quality and is authorized to levy fines against those who
violate the standards.
Criteria Pollutants - ✔✔the most pervasive air pollutants and those of the greatest
concern in the United States.
examples are sulfur dioxide,carbon monoxide,nitrogen oxides,ground-level ozone
Air Quality Index - ✔✔an index that indicates the level of pollution in the air and
associated health risk.
Greenhouse Gases - ✔✔atmosphere gases principally carbon dioxide
chloroflucarbons,ozone,methane,water vapor,and nitrous oxide, that are transparent to
visible light but absorb infrared radiation.
COPYRIGHT © 2025 BY EMILLY CHARLOTTE, ALL RIGHTS RESERVED 2
