Podcast
Questions and Answers
Which of the following correctly describes an environmental health hazard?
Which of the following correctly describes an environmental health hazard?
- A factor that only affects the economy of a region.
- A naturally occurring event that primarily affects wildlife populations.
- A factor that threatens or harms human health. (correct)
- A technological advancement that has unintended consequences.
Which category of environmental hazards includes viruses and bacteria?
Which category of environmental hazards includes viruses and bacteria?
- Social
- Biological (correct)
- Chemical
- Physical
Which of the following is an example of a social environmental hazard?
Which of the following is an example of a social environmental hazard?
- Exposure to UV radiation
- An earthquake
- A pesticide
- Smoking cigarettes (correct)
Which category do disinfectants, pesticides, and insecticides fall under when classifying environmental hazards?
Which category do disinfectants, pesticides, and insecticides fall under when classifying environmental hazards?
Which type of environmental hazard includes earthquakes, volcanic eruptions, and UV radiation?
Which type of environmental hazard includes earthquakes, volcanic eruptions, and UV radiation?
How does epidemiology contribute to our understanding of environmental hazards?
How does epidemiology contribute to our understanding of environmental hazards?
What is a key limitation of epidemiology in determining the impact of health hazards?
What is a key limitation of epidemiology in determining the impact of health hazards?
How does toxicology primarily assess the risks associated with environmental hazards?
How does toxicology primarily assess the risks associated with environmental hazards?
What does the toxicity of a substance depend on?
What does the toxicity of a substance depend on?
How do toxicologists determine the toxicity of a substance?
How do toxicologists determine the toxicity of a substance?
In the context of environmental health, what does epidemiology primarily study?
In the context of environmental health, what does epidemiology primarily study?
Why is understanding the dose-response relationship important in toxicology?
Why is understanding the dose-response relationship important in toxicology?
What is the primary distinction between epidemiology and toxicology?
What is the primary distinction between epidemiology and toxicology?
What is the overall goal of studying environmental health hazards?
What is the overall goal of studying environmental health hazards?
What did the rise and fall of DDT usage demonstrate about environmental health?
What did the rise and fall of DDT usage demonstrate about environmental health?
Which of the following best describes how DDT has been used in the past and present?
Which of the following best describes how DDT has been used in the past and present?
What is the primary reason why some African countries resumed the use of DDT despite its known environmental harms?
What is the primary reason why some African countries resumed the use of DDT despite its known environmental harms?
What is a major downside of using DDT?
What is a major downside of using DDT?
According to environmental health principles, which of the following is the closest definition of a risk assessment?
According to environmental health principles, which of the following is the closest definition of a risk assessment?
One third of death and disease in the least developed nations is a direct result of what?
One third of death and disease in the least developed nations is a direct result of what?
Flashcards
Environmental Hazards
Environmental Hazards
Factors that threaten or harm human health.
Biological Hazards
Biological Hazards
Viruses and bacteria that can cause disease.
Social Hazards
Social Hazards
Hazards arising from social behaviors and conditions.
Chemical Hazards
Chemical Hazards
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Physical Hazards
Physical Hazards
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Epidemiology
Epidemiology
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Toxicology
Toxicology
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Toxicology Definition
Toxicology Definition
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Toxicity
Toxicity
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Study Notes
- Environmental health is covered in Chapter 9.
- Section 9.1, "An Overview of Environmental Health," can be found on pages 256-260.
- This lesson covers the types of environmental health hazards.
- The lesson will compare epidemiology and toxicology.
- The lesson plan involves reasons why individuals respond differently to the same environmental hazards and risk assessment.
Environmental Hazards
- Environmental hazards threaten or harm human health.
Types of Environmental Hazards
- Environmental hazards can be biological, social, chemical, or physical.
- Biological hazards include viruses and bacteria, as pathogens or disease-causing agents.
- Social hazards include smoking cigarettes, living in a polluted area, and eating unhealthy food.
- Chemical hazards include disinfectants, pesticides, and insecticides.
- Physical hazards include earthquakes, volcanic eruptions, tornadoes, fires, and UV radiations.
Understanding Environmental Hazards
- Environmental hazards impact health
- Epidemiology is the study of diseases in human populations.
- Toxicology is the study of how poisons affect an organism's health.
Toxicology
- Toxicology studies how poisonous substances affect an organism's health.
- Toxicity measures how harmful a substance is.
- Toxicologists look at toxicity by determining dose-response relationships.
- Toxicity depends on what the substance is.
- Toxicity depends on how much of a substance is needed to cause harm.
DDT
- DDT is the least expensive way of killing mosquitoes that cause malaria.
- DDT harms fish and birds and can cause liver damage, cancer, and convulsions in humans.
- Many countries banned the use of DDT in the 1970s.
- Some African countries have resumed using DDT to control malaria.
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