b i n g o
DESCRIPTION
Bingo Springboard” An Introductory Activity. B I N G O. Directions: Randomly fill in each box with a different phrase from your list. This will be your bingo card for the game. See sample below:. SAMPLE ONLY. I will show one cartoon at a time. Look carefully at each cartoon. - PowerPoint PPT PresentationTRANSCRIPT
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B I N G O
Bingo Springboard”
An Introductory Activity
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Directions: Randomly fill in each box with a different phrase from your list. This will be your bingo card for the game. See sample below:
Infertility Mold Lead
Toxic Plastics
What is
the
common theme?
Mercury
Obesity Carcinogens UV RadiationSAMPLE ONLY
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I will show one cartoon at a time. Look carefully at each cartoon.
If the concept illustrated within the cartoon matches with one of the words on your Bingo card, write the letter of the cartoon in that box.
We will be playing “COVER ALL” – you must cover all of the words in order to win BINGO!
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A
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http://www.grist.org/comments/ha/1999/05/31/radon053199.gif
B
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C
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7D
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http://www.cartoonaustralia.com/nik/archives/images/poll.gif
E
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9F
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10G
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11H
http://www.claybennett.com/images/archivetoons/water_glass.jpg
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12I
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K
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L
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17N
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18O
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P
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Q
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http://www.nearingzero.net/screen_res/nz171.jpg R
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http://www.nearingzero.net/screen_res/nz324.jpg
S
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Key to Cartoon Activity:
A. ObesityB. RadonC. AllergensD. LeadE. Air PollutionF. MoldG. UV RadiationH. Water PollutionI. Superfund SitesJ. Nuclear WastesK. Birth DefectsL. PlasticsM. PesticidesN. CarcinogensO. Resistant MicrobesP. Contaminated FoodsQ. InfertilityR. MercuryS. Alcohol
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“Tox In” The CityExploring Environmental
Health Science Issues
Colleen Hagadorn & Judy Moffitt
Biology & Chemistry Mentors
South Glens Falls High School
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HEADLINES
• Antiperspirants Cause Breast Cancer• Warning: Febreze is Toxic to Pet!• Dioxins Released by Freezing Water Bottles• Chlorinated Water Causes Cancer
What’s a person
supposed to think?
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Environmental Health -Then & Now
"If you want to learn about the health of a population, look at the air they breath, the water they drink, and the places where they live.“ - Hippocrates, the Father of Medicine, in the Fifth Century BC.
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What is Environmental Health Science?
The field of science that studies how the environment influences human health and disease.
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ENVIRONMENT
Environment = Natural Environment +
Human-made Environment +
Social Environment
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Sources of Environmental Hazards & Hazards
• Look at the Tox Town Scene for Activity #1
• Identify Potential Sources of Environmental Hazards
• Identify the Potential Hazards associated with each source
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ENVIRONMENTAL HEALTH SCIENCES
Today, the environmental health sciences aren't entirely about pesticides and other chemical pollutants in our air and water. The definition of "environmental health" has broadened to include the environment we create for ourselves (by smoking or not smoking, and by our diet, for example). It also includes the medicines and other therapies we are prescribed, our occupations and places of work, and our lifestyles: Are we couch potatoes or joggers? Sexually reckless or responsible? Listening to loud music or keeping the volume down?
http://www.niehs.nih.gov/oc/factsheets/ead/healthy.htm
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For Activity #1
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For Activity #1
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For Activity #1
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For Activity #1
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How Does Environmental Health Sciences Differ From How
Humans Affect the Environment (Ecology)?
Activity #2 -Think, Pair, Share
Do Think/Pair/Share Activity
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Ecology
Ecology -How Humans Affect Environment
May study how water pollutionis harming fish
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Environmental Health Science
Focus is on HUMAN Health
EnvironmentalHealth Scientist
May study how eating the fish is harming humans.
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Examples of Environmental Hazards that Cause Human Health Problems
• Pesticides/Herbicides• Arsenic• Lead• Mold• Carbon monoxide• Asbestos• Benzene• Electromagnetic Fields
• Alcohol• Radon• Ozone• Particulate Matter• Tobacco• Dioxins• Noise Pollution
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TOXICITY
• Toxicology
• Toxicity
— the study of how environmental hazards,
such as natural and human-made chemicals,
can enter our bodies and make us sick
— a measure of the danger of a chemical
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TOXIN
• Toxicant (Poison)—
A chemical capable of producing a harmful reaction in a living organism.
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IS THIS CHEMICAL A TOXIN?
Read Activity #3 Article and Decide
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IS THIS CHEMICAL A TOXIN?DIHYDROGEN MONOXIDE
The dangers of dihydrogen monoxide include:• Also called "hydroxyl acid", a major component of acid rain;
• Contributes to soil erosion;
• Contributes to the greenhouse effect;
• Accelerates corrosion and breakdown of electrical equipment;
• Excessive ingestion may cause various unpleasant effects;
• Prolonged contact with its solid form results in severe tissue damage;
• Inhalation, even in small quantities, may cause death;
• Its gaseous form may cause severe burns;
• It has been found in the tumors of terminal cancer patients;
• Withdrawal by those addicted to it causes certain death within 168 hrs
Nevertheless, governments and corporations continue using it widely, heedless of its grave dangers.
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Is This Chemical a Toxin?
Read the news headline onthe next slide:
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POSTED: Tuesday, May 6, 2003
Plattsburgh, New York--
Police: Student Died From ‘Water Intoxication’ During Hazing
So, is water a toxicant????
The death of a freshman pledging the Psi Epsilon Chi fraternity at the State University of New York College at Plattsburgh has led to 11 members being charged with 150 crimes, including hazing and negligent homicide, at the conclusion of the police investigation. The freshman reportedly died of hydroneutremia, or water intoxication, which caused swelling of the brain.
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Any chemical can be toxic if you eat, drink, or absorb
too much of it.
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THE DOSE MAKES THE POISON
“All substances are poisons; there is none that is not a poison.
The right dose differentiates a poisonand a remedy.”
Paracelsus (1493-1541)
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SOURCE OF EXPOSURE
A hazard’s point of origin, such as cars, industry, farming, etc.
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ENVIRONMENTAL PATHWAY
Means of getting from the source to us.
Can include: * air we breath * water we drink * food we eat * soil in which we play and grow food
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EXPOSURE
EXPOSURE
-- the term used to describe the total amount of a hazard that comes in direct contact with your body.
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ROUTES OF EXPOSURE
INHALATION
INGESTION DERMALABSORPTION
INJECTION
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DOSE
DOSE
-- the term used to describe the specific amount of a chemical that enters the body.
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DOSAGE
• is the amount of chemical per unit of
body weight.
• usually given as milligrams of chemical
per kilogram of body weight (mg/kg)
DOSE
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DOSE
Perform Activity #4
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Effects of Amount on Dose
Increasing the amount of chemical for the same size of organism
Dose increases
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Effects of Size on Dose
Dose increases
A smaller size of organism with the same amount of chemical
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DOSE/RESPONSE
Dose Depends on:
DURATIONOF EXPOSURE BODY SIZE
FREQUENCYOF EXPOSURE
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PROBLEM
Who took the largest dose of Tylenol?
A. An adult woman who weighs 125 lb and took 300 mg of Tylenol
B. An adult man who weighs 180 lb and took 300 mg of Tylenol
C. A teenage boy who weighs 135 lb and took 600 mg of Tylenol
D. A baby who weighs 20 lb and took 100 mg of Tylenol
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PROBLEM
Who took the largest dose of Tylenol?
Answer: To calculate dose, divide the amount of the hazard by the body weight
The concentration of the chemical in the small body is much higher than in the larger bodies.
A. 300mg/125lb = mg/lbB. 300mg/180lb = mg/lbC. 600mg/135lb = mg/lb
D. 100mg/20lb = mg/lb5.0
2.41.7
4.4
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What amount causes harm?
Some chemicals are good in small amounts, but toxic in large amounts
Example: botulinum toxin
Small amount →
Large amount →
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What amount causes harm?
Some chemicals are good in small amounts, but toxic in large amounts
Example: botulinum toxin
Small amount → prevents wrinkles (BOTOX)
Large amount → paralysis, death
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TOXIC EFFECTS
TOXICANT TOXICITY
Sugar
Salt
Herbicide
Arsenic
Nicotine
Botulism
Rank the following in order of least toxic (1) to most toxic (6) based on LD50 data:
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TOXIC EFFECTS
TOXICANT TOXICITY
Sugar 1
Salt 2
Herbicide 3
Arsenic 4
Nicotine 5
Botulism 6
Rank the following in order of least toxic (1) to most toxic (6) based on LD50 data:
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TOXIC EFFECTS
Chemical Lethal Dose
Sugar 3 quarts
Alcohol (ethyl alcohol) 3 quarts
Salt (sodium chloride) 1 quart
Herbicide (2,4-D) ½ cup
Arsenic (arsenic acid) 1-2 teaspoons
Nicotine ½ teaspoon
Food poison (botulism) microscopic
Approximate Lethal Doses of Common Chemicals(Calculated for a 160 lb. human based on data on rats)
Source: NIH Curriculum, Chemicals, the Environment, and You Videodiscovery, 2000
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TOXIC EFFECTS
Terms used to refer different durations of exposure:
ACUTE EXPOSURE
CHRONICEXPOSURE
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TOXIC EFFECTS
Terms used to refer different durations of exposure:
ACUTE EXPOSURE
CHRONICEXPOSURE
Refers to single exposure or a very limited exposure
Example: breathing fumes from chlorine spill
Refers to a prolonged or repeated exposure
Example: breathing polluted air over a lifetime
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INDIVIDUAL SUSCEPTIBILITY
Why did I get sick and she didn’t?Depends on:
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INDIVIDUAL SUSCEPTIBILITY
Why did I get sick and she didn’t?Depends on:
GENETICS
GENDER
AGE BODY SIZE
GENERAL HEALTH
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PROBLEM
A family has a clogged furnace that is producing carbon monoxide, a hazardous gas. Which family member is likely to be harmed the most?
A. Nicholas, the son who is in 12th grade
B. Baby Quianna, who is going into preschool next year
C. Mrs. Shaw, the mother who works at home
D. Mr. Shaw, the father who works at the local book store
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Dose depends on several factors. Here we can estimate: * length of exposure, * age of the people exposed, and * size of the people exposed. It is most likely that Baby Quianna is most likely to be harmed as: 1) she is the youngest and therefore 2) the smallest, and 3) spends the most time in the home along with her mother.
ANSWER:
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RISKS and BENEFITS
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RISKS and BENEFITS
What is risk assessment?
• Educate yourself about the risk
• Evaluate the risk vs. the benefit
• Make an informed decision based on the evaluation
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RISKS and BENEFITS
Do Carousel Activity # 5