Introduction to Air Pollution

A collection of flashcards covering key terms and definitions associated with air pollution, its sources, effects, and regulations.

Air Pollution

The presence of harmful substances in the atmosphere.

Pollutants

Substances that cause pollution.

Sources of Air Pollutants

Includes coal combustion, fossil fuels, and biomass.

Coal Combustion

Releases carbon dioxide, sulfur dioxide, toxic metals, and particulates.

Nitrogen Oxides (NOx)

Gases released from combustion that lead to ozone and smog.

Sulfur Dioxide (SO2)

An air pollutant released primarily from burning fossil fuels.

Carbon Monoxide (CO)

A toxic gas produced by incomplete combustion of fuels.

Particulate Matter (PM)

Tiny particles in the air that can harm health.

Ozone (O3)

A secondary pollutant often formed from NOx and VOCs.

Primary Pollutants

Pollutants emitted directly from a source.

Secondary Pollutants

Pollutants that form from the transformation of primary pollutants.

Clean Air Act

Legislation that regulates air quality standards.

Environmental Protection Agency (EPA)

Federal agency responsible for regulating environmental protection.

Photochemical Smog

A type of smog formed by the reaction of sunlight with NOx and VOCs.

Volatile Organic Compounds (VOCs)

Organic chemicals that easily evaporate and contribute to smog.

Respiratory Irritant

A substance that can cause irritation to the respiratory system.

Acid Rain

Precipitation with a low pH caused by NOx and SO2.

Thermal Inversion

A weather phenomenon where a layer of warm air traps pollutants near the ground.

Urban Heat Island Effect

Urban areas having higher temperatures than surrounding rural areas.

Electrostatic Precipitator

A device that removes particles from industrial exhaust streams.

Catalytic Converter

An air pollution control device in vehicles that reduces harmful emissions.

Scrubbers

Devices that remove pollutants from exhaust gases.

Sources of Indoor Air Pollution

Includes carbon monoxide, mold, VOCs, and asbestos.

Radon Gas

A naturally occurring radioactive gas that can cause lung cancer.

Lead Pollution

Can come from old paint and plumbing, harmful to health.

Dust

Small particles that can exacerbate respiratory conditions.

Mold

A type of fungus that can grow indoors and affect air quality.

Asbestos

A hazardous material previously used as insulation, now linked to lung diseases.

Noise Pollution

Sound at levels high enough to cause physiological stress and hearing loss.

Natural Sources of CO2

Includes respiration, decomposition, and volcanic eruptions.

Acid Deposition

The settling of acidic materials from the atmosphere to the ground.

Environmental Impact of Acid Rain

Can cause soil and water acidification, harming ecosystems.

Photochemical Oxidants

Pollutants formed through reactions involving NOx and VOCs.

Criteria Air Pollutants

A group of pollutants regulated by the EPA for health protection.

Health Effects of Air Pollutants

Can include respiratory illnesses, cardiovascular problems, and eye irritation.

Ozone Layer

A layer of ozone in the stratosphere that protects Earth from UV radiation.

Tropospheric Ozone

Ozone found at ground level, a major component of smog.

Global Warming

An increase in Earth's average surface temperature due to greenhouse gases.

Carbon Dioxide (CO2)

A greenhouse gas produced by combustion and respiration.

Methane (CH4)

A potent greenhouse gas emitted during natural gas production and agriculture.

Soot

Black carbon; a component of PM that can affect climate and health.

Sulfate Aerosols

Particles in the atmosphere that can influence climate and health.

Nitric Acid (HNO3)

A compound formed in the atmosphere that contributes to acid rain.

Sulfuric Acid (H2SO4)

A major contributor to acid rain, formed from sulfur dioxide.

Regulatory Practices

Government actions to control pollution emissions.

Conservation Practices

Activities aimed at reducing resource use and pollution.

Alternative Fuels

Fuels that are not derived from fossil sources, like solar and wind.

Vapor Recovery Nozzle

A device that captures gas vapors during refueling.

Pollution Credits

Credits that can be bought or sold based on pollution levels.

Air Quality Index (AQI)

A measure used to communicate how polluted the air currently is.

Biomass Fuels

Organic materials used as fuel, which can release pollutants.

Respiration

The process in which organisms convert oxygen and glucose into energy.

Decomposition

The breakdown of organic matter which can release CO2.

Volcanic Eruptions

Natural events that can release large amounts of pollutants into the atmosphere.

Eutrophication

Nutrient enrichment of water bodies leading to excessive algae growth.

Fossil Fuels

Natural fuels formed from the remains of living organisms, such as coal and oil.

Indoor Air Quality

The quality of air inside buildings, affecting health and comfort.

Lead Pipes

Old plumbing that can leach lead into drinking water.

Clean Water Act

Regulates discharges of pollutants into U.S. waters.

Environmental Justice

The fair treatment of all people regarding environmental laws and regulations.

Sustainable Practices

Methods that avoid depletion of natural resources.

Climate Change

Long-term changes in temperature and weather patterns.

Renewable Energy Sources

Energy from natural resources that are replenished, such as solar and wind.

Infrastructure Overhaul

Changes to systems to reduce emissions and pollution.

Waste Incineration

Burning of waste materials which can release pollutants.

Long-range Transport

Movement of pollutants across long distances through the atmosphere.

Chlorofluorocarbons (CFCs)

Compounds once used in refrigeration that deplete ozone.

Greenhouse Effect

The warming of the Earth due to trapping of heat by greenhouse gases.

Airborne Particles

Particles suspended in the air that can affect health and visibility.

Emissions Inventory

A comprehensive database of emissions data for different pollutants.

Stratospheric Ozone

Ozone found in the stratosphere that protects life on Earth.

Wastewater Treatment Plants

Facilities that treat sewage and industrial waste before releasing it.

Biodiversity Loss

Reduction in the variety of life and ecosystems across the planet.

Chemical Pollutants

Substances that can contaminate natural resources.

Health Risk Assessment

Evaluation of potential health effects from exposure to pollutants.

Environmental Assessment

The evaluation of the environmental impact of a proposed project.

Industrial Emissions

Pollutants released from factories and industrial processes.

Public Health

The health of the population as influenced by environmental factors.

Enforcement Mechanisms

Systems used to ensure compliance with environmental regulations.

Air Quality Standards

Regulations setting acceptable levels for pollutants.

Environmental Monitoring

Regular assessment of environmental quality and health.

Conservation Technology

Innovations aimed at sustainable resource use.

Clean Energy Transition

The shift from fossil fuels to renewable energy sources.

Aquifer Protection

Measures taken to ensure the water quality of underground aquifers.

Carbon Footprint

The total greenhouse gas emissions caused directly and indirectly by an individual, organization, event, or product.

Ecosystem Services

The benefits people obtain from ecosystems.

Radiation Pollution

Contaminants resulting from radioactive materials.

Environmental Regulations

Rules and standards set by government to protect the environment.

Airborne Toxins

Harmful substances that can be inhaled and lead to health issues.

Sustainable Development

Development that meets the needs of the present without compromising the ability of future generations to meet their own needs.

Urban Planning

The design and regulation of land use in urban areas.

Pollution Prevention

Strategies to prevent the creation of pollutants.

Environmental Advocacy

The act of arguing in support of a specific cause related to the environment.

Carbon Trading

Market-based approach to control pollution by providing economic incentives.

Climate Action Plan

A strategy to reduce greenhouse gas emissions and adapt to climate change.

Environmental Risk Assessment

Process to evaluate the likelihood of adverse effects due to environmental hazards.

Waste Reduction Strategies

Methods aiming to minimize the amount of waste generated.

Technological Innovations

New methods or technology developed to solve environmental problems.

Environmental Sustainability

Responsible interaction with the environment to avoid depletion of natural resources.

Urban Green Spaces

Parks and recreational areas within urban areas providing ecological benefits.