2/8         A/B DayLEQ: What are the risks and benefits ofusing chemicals?1. What is a dose?2. What is exposure?3. What is...
Let’s Practice: Fill in the blank! Beginning in the 1950’s, scientists started spraying large   DOSES _________ of DDT int...
EOG QUESTIONWhich factor best explains why some peoplewill develop cancer and others will not afterbeing exposed to the sa...
Today’s LEQ: What are the risks and        benefits of using chemicals?By the end of today, you should be able to…1. Make ...
Focus Vocabulary102. Sanitation103. Preservatives104. Oxidation105. Fertilizer106. Pesticide
Activating Strategy:http://www.youtube.com/watch?v=R7gtBXMyMI0&feature=related
Think-Pair-Share: For $50,000, would you…Eat a live scorpion?                       Be covered in                       li...
You just did a ….Risk-Benefit AnalysisWhat are the risks?What are the benefits?     Is it WORTH IT?!
UsingChemicals:RISKS AND BENEFITS
Chemicals Used   Benefits   RisksSanitationPreservativesMedicineAgriculture
Chemicals Used   Benefits   RisksSanitation             UNSCRAMBLE                 THEPreservatives              FOLLOWING...
SANITATION:                                      Check your work!-the use of chemicals to remove or treat waste-the use of...
Chemicals Used   Benefits      RisksSanitation                                  UNSCRAMBLE THEPreservatives               ...
Risk-Benefit Analysis: Sanitation-chlorine can cause water to tasteand smell bad-Treating drinking water removesharmful ba...
Risk-Benefit Analysis: Preservatives-keeps food safe to eat for a longtime-some people are allergic orintolerant to preser...
Risk-Benefit Analysis: Medicine-bacteria can adapt to themedicine and come back strongerthan before-cures illness and stop...
Risk-Benefit Analysis: Agriculture-helps us increase the amount ofcrops we can produce-can act as carcinogens (cause cance...
EOG QUESTIONWhat makes fertilizers a benefit to the farmingindustry?     a) they increase nutrients in the soil     b) the...
EOG QUESTIONWhat is the best way to reduce a person’sexposure to pesticides??    a) put leftovers in the refrigerator    b...
EOG QUESTIONWhy were some pesticides, such as DDT,removed from public use?    a) they can cause heart disease    b) they c...
Make an advertisement!On your paper, make an advertisement for a type ofmedicine, pesticide, fertilizer, food preservative...
Summarizer:1. What is one risk of using preservatives in   food?2. What are the benefits of using chemicals for   sanitati...
Upcoming SlideShare
Loading in …5
×

2/8/12

351 views

Published on

Published in: Health & Medicine, Business
  • Be the first to comment

  • Be the first to like this

2/8/12

  1. 1. 2/8 A/B DayLEQ: What are the risks and benefits ofusing chemicals?1. What is a dose?2. What is exposure?3. What is potency?4. Why will some people get sick and others will not—even when they are exposed to the same amount of achemical?5. Copy and complete: The concentration of achemical [increases/decreases] at the top of the foodchain.
  2. 2. Let’s Practice: Fill in the blank! Beginning in the 1950’s, scientists started spraying large DOSES _________ of DDT into the environment. DDT is a chemical with a very high POTENCY meaning it is extremely powerful, ________, even in small amounts. As humans continued to spray DDT into the environment, we quickly learned that the _______________ of the chemical increased as it traveled CONCENTRATION higher up the food chain. Small organisms, like insects, would only have a small percentage of DDT in their bodies, but the organisms at the top of the food chain would eat millions of smaller animals, which would greatly increase the amount of the chemicals in their bodies. OrganismsEXPOSURE to the chemical continued to increase because the ________ chemical did not disappear once it was sprayed into the environment. Because different organisms have a different SUSCEPTIBILITY ______________ to the chemical, not all of the eagles died.
  3. 3. EOG QUESTIONWhich factor best explains why some peoplewill develop cancer and others will not afterbeing exposed to the same high levels of aharmful chemical? a) concentration of the chemical b) potency of the chemical c) individual susceptibility to the chemical d) individual exposure to the chemical
  4. 4. Today’s LEQ: What are the risks and benefits of using chemicals?By the end of today, you should be able to…1. Make a risk-benefit analysis for using chemicals for medicine, sanitation, food preservatives, and agriculture
  5. 5. Focus Vocabulary102. Sanitation103. Preservatives104. Oxidation105. Fertilizer106. Pesticide
  6. 6. Activating Strategy:http://www.youtube.com/watch?v=R7gtBXMyMI0&feature=related
  7. 7. Think-Pair-Share: For $50,000, would you…Eat a live scorpion? Be covered in live snakes?Jump off a skyscraper?
  8. 8. You just did a ….Risk-Benefit AnalysisWhat are the risks?What are the benefits? Is it WORTH IT?!
  9. 9. UsingChemicals:RISKS AND BENEFITS
  10. 10. Chemicals Used Benefits RisksSanitationPreservativesMedicineAgriculture
  11. 11. Chemicals Used Benefits RisksSanitation UNSCRAMBLE THEPreservatives FOLLOWING HERE BYMedicine PUTTING THE INFORMATION NEXT TO THE APPROPRIATEAgriculture TERM!
  12. 12. SANITATION: Check your work!-the use of chemicals to remove or treat waste-the use of chlorine to filter dangerous material from drinking waterPreservatives:-the use chemicals to preserve food and keep it safe to eat-chemicals slow oxidation, which causes foods (such as apples) to turnbrownMEDICINE- the use of chemicals to treat sickness and pain-chemicals are used to create antibiotics, which kill disease-causingbacteriaAGRICULTURE-the use of fertilizers, which give plants nutrients to help them grow-the use of chemicals such as pesticides, which kill organisms (likeinsects) that eat crops
  13. 13. Chemicals Used Benefits RisksSanitation UNSCRAMBLE THEPreservatives FOLLOWING HERE BY PUTTING THE INFORMATION NEXTMedicine TO THE APPROPRIATE TERM!Agriculture
  14. 14. Risk-Benefit Analysis: Sanitation-chlorine can cause water to tasteand smell bad-Treating drinking water removesharmful bacteria
  15. 15. Risk-Benefit Analysis: Preservatives-keeps food safe to eat for a longtime-some people are allergic orintolerant to preservatives, whichcan make them sick
  16. 16. Risk-Benefit Analysis: Medicine-bacteria can adapt to themedicine and come back strongerthan before-cures illness and stops spread ofdisease
  17. 17. Risk-Benefit Analysis: Agriculture-helps us increase the amount ofcrops we can produce-can act as carcinogens (cause cancer)-can destroy ecosystems by causingover-growth or killing animals in thefood chain
  18. 18. EOG QUESTIONWhat makes fertilizers a benefit to the farmingindustry? a) they increase nutrients in the soil b) they increase the growth of helpful bacteria c) they decrease the chance of bacteria growing in the soil d) they decrease the chance of plants being eaten by insects
  19. 19. EOG QUESTIONWhat is the best way to reduce a person’sexposure to pesticides?? a) put leftovers in the refrigerator b) do not eat bread with mold on it c) make sure meat is cooked all the way before eating it d) wash fruits and vegetables before eating them
  20. 20. EOG QUESTIONWhy were some pesticides, such as DDT,removed from public use? a) they can cause heart disease b) they can cause diabetes c) they can cause meningitis d) they can cause cancer
  21. 21. Make an advertisement!On your paper, make an advertisement for a type ofmedicine, pesticide, fertilizer, food preservative, or anew sanitation chemical.Your advertisement MUST INCLUDE: -the name of your product -a description of what it does BE CREATIVE! Think -the benefits of using it about what a real -the risks of using it advertisement looks like and what it -illustrations includes!
  22. 22. Summarizer:1. What is one risk of using preservatives in food?2. What are the benefits of using chemicals for sanitation?3. Do you think that using pesticides to grow crops is worth the risk of damaging our environment?4. Why or why not (for # 3)

×