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47 Cards in this Set
- Front
- Back
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How many teenagers visit tanning beds each year?
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2.3 million
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What percentage of males and females who have EVER used a tanning bed have a higher risk of developing melanoma?
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15%
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What percentage of people that first use a tanning bed before age 35 will have increased lifetime melanoma risk?
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75%
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Which UV rays are completely filtered by the stratospheric ozone layer?
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UVC
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Which UV rays produce tanning and sunburn, are blocked by glass, forms melanin, and is a cancer precursor?
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UVB
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Which UV rays penetrate deep into the skin, causes damage associated with aging, stronger link to skin cancer, source of photosensitizer reactions, penetrates glass, and is consistent whether it's sunny or cloudy?
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UVA
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What is suncreen?
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Sunscreen are chemicals designed to block UV exposure to skin.
-Physical blockers block all light -Chemical absorbers absorb UV only -Some convert UVB to UVA |
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What does SPF measure?
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SPF measure UVB protection absorbing power ONLY.
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Do higher altitudes and surface reflection increase sun exposure?
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YES
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How many U.S. chemicals can block UVA rays?
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only 7
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What accounts for at least 2/3 of skin cancers worldwide?
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Midday summer sun exposure.
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EWG Criteria
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-UVA and UVB protection
-stable in sunlight -don't contain any inredients with a significant amount of health risk. |
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What is the leading cause of death in women?
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Cardiovascular disease
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Symptoms of a heart attack in women
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-Nausea
-Indegestion -Dizziness -Anxiety. -flu like symptoms for 2 weeks before heart attack diagnosis |
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What happens within hours of a coral snake bite?
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-developing tingling sensation in extremities
-speech is slurred -eyelids become droopy -lungs shut down |
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Is there a coral snake antivenom?
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yes, it prevents medical complications if used within hours of a coral snake bite.
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How many snake bites occur in the U.S. per year?
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only 100 or so
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What is a banned in homes but effective solution for dealing with bed bugs?
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Propoxur. Risk of nausea, dizziness, and blurred vision in children.
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About DDT
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-Chlorinated organic compound
-Hydrophobic -Persistent due to C-Cl bond stability |
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About Propoxur
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-Carbanate class compound
-Soluble in h2O -Degrades slowly in the environment |
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More than 100 deaths in the U.S. have been attributed to what on vehicles?
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aged tires which have dried out and ruptured or lost their treads
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After how many years should I tire not be used anymore?
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6 years
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Which car manufacturers have placed warnings into their user manuals about aged tires?
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-Ford
-BMW -Chrysler -Toyota -VW -Audi |
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What are Carotenoids?
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a class of phytochemical compounds in fruits and vegetables which are thought to be excellent antioxidants and effective in cancer prevention
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What did Dr. Elizabeth Jeffery from the University of Illinois Dept. of Food Science and Nutrition find?
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enhancing the bioactive compounds in broccoli and tomatoes increases their concentrations and slowed growth rates of prostate cancers in lab rats
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What is needed by our bodies in small amounts?
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Selenium Se
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Technology
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The processes by which society modifies materials for use. A technology can be based on common knowledge and/or scientific knowledge.
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What technologies have come to us from pre-history?
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-Fire
-Pottery -Soap |
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Science
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A body of knowledge based on published repeatable experimental facts which are subject to inspection and verification.
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Theory
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used to organize and explain experimental facts
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How should one dispose of unused or out of date pharmaceuticals?
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Ideally incinerate at high temperatures. At home: open container, crush contents, perhaps mix with kitty litter or soil, wrap up and place in garbage.
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Why is proper disposal of pharmaceuticals a matter of concern?
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Pharmaceuticals and their metabolites are being found in rivers and streams
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What is the new P&G water purification method?
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A packed of solid is stirred into a 10-L jug of water, after 5 minutes the water is filtered through a cloth. Residual chlorine then kills and remaining bacteria.
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What is the problem with simple chlorine treatments?
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organic matter in the water consumes too much chlorine, increasing the cost and decreasing the safety of treatment.
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Dalton's Atomic Theory
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1. all elements composed of ultimate particles--atoms
2. all atoms of a given element are alike and are different element to element. 3. chemical reactions are the combining or separating of atoms 4. compounds are composed of molecules having definite numbers of atoms. |
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Dimitri Mendelev's Periodic Table
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Arrange elements in increasing size (atomic weight). Vertical families based on chemical properties
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Can continually taking antibiotics alter gut bacteria?
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yes
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Characteristics of Metals
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-shiny
-ductile and malleable -conduct electricity well -conduct heat well -are about 80% of the elements |
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Characteristics of Non-metals
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-tend to appear dull
-brittle -poor conductors of heat -poor conductors of electricity |
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Who invented the battery?
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Alessandro Volta
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Who improved the battery to achieve high voltages?
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Humphrey Davy
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Who discovered that electric current could be cause chemical changes
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Michael Faraday
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Who developed high-voltage discharge tube?
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William Crookes
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Who discovered the electron?
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J.J. Thomson
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Who discovered radioactivity?
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Henri Becquerel
Pierre Curie Marie Curie |
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Who discovered x-rays?
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Wilhelm Roentgen
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Characteristics of an electron
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-part of every atom
-negative charge (-1) -small mass |
