3/16                 A/B DayLEQ: How do we use different measurements todetermine if our hydrosphere is healthy?1. What is...
Today’s LEQ: How do we use different    measurements to determine if our         hydrosphere is healthy?By the end of toda...
Focus Vocabulary:141. pH142. Turbidity143. Algal bloom144. Nitrates145. Bio-indicator
What are some physical characteristics      of someone who is sick?
Water can be sick too!What physical characteristicsdo you see in the water in each picture?
Draw this in your notes:Good Water Quality   Bad Water Quality
Unscramble!Muddy/Murky
How are dissolved oxygen and water                         temperature related?                                Temperature...
Good or Bad Water Quality?                      Good Dissolved Oxygen                        Still Pretty                ...
Temperature: CoolDissolved Oxygen Level: High
Temperature: HOTDissolved Oxygen Level: LOW
Evaluate: Water Health in North Carolina Cape Fear River           Lake Michie• 25° Celcius           • 38° Celcius  (68 °...
What is likely the cause of the low oxygen levels in July?a) High temperaturesb) Lots of algae diedc) More fish are being ...
Draw this in your notes:pH Scale: scale from 0-14 that measuresthe levels of acids and bases in a liquid
BrainPop: pH Scale
Draw this in your notes:pH Scale: scale from 0-14 that measuresthe levels of acids and bases in a liquidVery             N...
Healthy Water!   (Neutral)
ADD this to your notes:Good Water  Bad WaterQuality    Quality                        Lots of different                   ...
pH Level:   Around 7 (Neutral)
pH Level: Very high or very low
Evaluate: Water Health in North CarolinaNeuse River          Lake Phelps• pH: 8.1              • pH: 2.4Which body of fres...
ADD this to your notes:Good Water  Bad WaterQuality    Quality                          Neutral pH                        ...
Draw this in your notes:Turbidity: measures how clear ormuddy the water isHigh Turbidity = unhealthy   Low Turbidity = hea...
Turbidity: Low
Turbidity: High
Which one has the highest turbidity?
Which one has the highest turbidity?
Which one has the highest turbidity?
Evaluate: Water Health in North Carolina Neuse River          Lake Norman• High turbidity        • Low turbidity Which bod...
Think-Pair-Share:Can you think of anexample where toomuch of a good thingbecomes a bad thing?!
Too Much Algae = BAD!!!!!
Nitrates (nutrients from fertilizer) arewashed into hydrosphere  This causes algal blooms (when too     much algae grows i...
Discovery Education: Nutrient PollutionWhile you’re watching…HOW DO ALGAL BLOOMS    DAMAGE THE   HYDROSPHERE?
Nitrates (nutrients from fertilizer) are washed into hydrosphere    This causes algal blooms (when too       much algae gr...
Which water has high levels of nitrates?
Which water has high levels of nitrates?
ADD this to your notes:Good Water  Bad WaterQuality    Quality                         Normal algae                       ...
ADD this to your notes:Good Water  Bad WaterQuality    Quality                          Low Nitrate                       ...
What months might therehave been an algal bloom?
Break down the word:What do you think a bio-indicator is?
Draw this in your notes:Bio-indicators: animals that are usedto measure the health of waterExample: Trout can only live in...
ADD this to your notes:Good Water  Bad WaterQuality    Quality                        Presence of bio-                    ...
BrainPop: Water Pollution
EOG Question:Which of the following are indicators of a healthywater system?     a) high nitrates, high chlorophyll, low  ...
EOG Question:What does it mean when a scientist says alake has a high turbidity?     a) the water has a lot of particles i...
Let’s Practice!Water Quality Independent Practice
Summarizer:A student takes measurements from a lake in EastCharlotte. The student finds the following:Turbidity: HighDisso...
3/16/12
3/16/12
3/16/12
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3/16/12

  1. 1. 3/16 A/B DayLEQ: How do we use different measurements todetermine if our hydrosphere is healthy?1. What is desalination?2. How does the hydrosphere give us air to breathe?3. What is the difference between a point- and a non-point pollutant?4. Give an example of a point-source pollutant and anon-point-source pollutant5. What is one thing you can do to help keep ourhydrosphere clean?
  2. 2. Today’s LEQ: How do we use different measurements to determine if our hydrosphere is healthy?By the end of today, you should be able to…Examine the pH level, turbidity, nitrate level, oxygen level, and bio-indicators to determine if a body of water is healthy or unhealthy!
  3. 3. Focus Vocabulary:141. pH142. Turbidity143. Algal bloom144. Nitrates145. Bio-indicator
  4. 4. What are some physical characteristics of someone who is sick?
  5. 5. Water can be sick too!What physical characteristicsdo you see in the water in each picture?
  6. 6. Draw this in your notes:Good Water Quality Bad Water Quality
  7. 7. Unscramble!Muddy/Murky
  8. 8. How are dissolved oxygen and water temperature related? Temperature: Dissolved Oxygen: 20° 9 mg/lDissolved Oxygen 40° 6 mg/l 60 ° 5 mg/l 80 ° 3 mg/l As the temperature increases, the amount of dissolved oxygen [increases/decreases]. Water Temperature
  9. 9. Good or Bad Water Quality? Good Dissolved Oxygen Still Pretty Good  TERRIBLE!  Water Temperature
  10. 10. Temperature: CoolDissolved Oxygen Level: High
  11. 11. Temperature: HOTDissolved Oxygen Level: LOW
  12. 12. Evaluate: Water Health in North Carolina Cape Fear River Lake Michie• 25° Celcius • 38° Celcius (68 ° Farenheit) (100.4 ° Farenheit)• Dissolved Oxygen: • Dissolved Oxygen: 8 mg/l 2 mg/l Which body of fresh water is healthier? How do you know?
  13. 13. What is likely the cause of the low oxygen levels in July?a) High temperaturesb) Lots of algae diedc) More fish are being bornd) Fewer bubbles are in the water
  14. 14. Draw this in your notes:pH Scale: scale from 0-14 that measuresthe levels of acids and bases in a liquid
  15. 15. BrainPop: pH Scale
  16. 16. Draw this in your notes:pH Scale: scale from 0-14 that measuresthe levels of acids and bases in a liquidVery Neutral  VeryAcidic Basic
  17. 17. Healthy Water! (Neutral)
  18. 18. ADD this to your notes:Good Water Bad WaterQuality Quality Lots of different species of algae Algal Bloom!
  19. 19. pH Level: Around 7 (Neutral)
  20. 20. pH Level: Very high or very low
  21. 21. Evaluate: Water Health in North CarolinaNeuse River Lake Phelps• pH: 8.1 • pH: 2.4Which body of fresh water ishealthier? How do you know?
  22. 22. ADD this to your notes:Good Water Bad WaterQuality Quality Neutral pH (about 7) Very high pH or very low pH
  23. 23. Draw this in your notes:Turbidity: measures how clear ormuddy the water isHigh Turbidity = unhealthy Low Turbidity = healthy
  24. 24. Turbidity: Low
  25. 25. Turbidity: High
  26. 26. Which one has the highest turbidity?
  27. 27. Which one has the highest turbidity?
  28. 28. Which one has the highest turbidity?
  29. 29. Evaluate: Water Health in North Carolina Neuse River Lake Norman• High turbidity • Low turbidity Which body of fresh water is healthier? How do you know?
  30. 30. Think-Pair-Share:Can you think of anexample where toomuch of a good thingbecomes a bad thing?!
  31. 31. Too Much Algae = BAD!!!!!
  32. 32. Nitrates (nutrients from fertilizer) arewashed into hydrosphere This causes algal blooms (when too much algae grows in an area)
  33. 33. Discovery Education: Nutrient PollutionWhile you’re watching…HOW DO ALGAL BLOOMS DAMAGE THE HYDROSPHERE?
  34. 34. Nitrates (nutrients from fertilizer) are washed into hydrosphere This causes algal blooms (when too much algae grows in an area) Algal blooms damage the hydrosphere by:-using up all of water’s dissolved oxygen-releasing toxic chemicals-blocking out sunlight
  35. 35. Which water has high levels of nitrates?
  36. 36. Which water has high levels of nitrates?
  37. 37. ADD this to your notes:Good Water Bad WaterQuality Quality Normal algae levels Algal Bloom!
  38. 38. ADD this to your notes:Good Water Bad WaterQuality Quality Low Nitrate Levels High Nitrate levels
  39. 39. What months might therehave been an algal bloom?
  40. 40. Break down the word:What do you think a bio-indicator is?
  41. 41. Draw this in your notes:Bio-indicators: animals that are usedto measure the health of waterExample: Trout can only live in healthy waterTrout in water = healthy No Trout in water = unhealthy
  42. 42. ADD this to your notes:Good Water Bad WaterQuality Quality Presence of bio- indicators No bio-indicator
  43. 43. BrainPop: Water Pollution
  44. 44. EOG Question:Which of the following are indicators of a healthywater system? a) high nitrates, high chlorophyll, low temperature b) low temperature, high dissolved oxygen, neutral pH c) low pH, high nitrates, low dissolved oxygen d) low turbidity, high chlorophyll, high temperature
  45. 45. EOG Question:What does it mean when a scientist says alake has a high turbidity? a) the water has a lot of particles in it b) the water is very clear c) the water is very basic d) the water can support many organisms
  46. 46. Let’s Practice!Water Quality Independent Practice
  47. 47. Summarizer:A student takes measurements from a lake in EastCharlotte. The student finds the following:Turbidity: HighDissolved Oxygen: lowTemperature: 111 ° FahrenheitpH Level: 3.1Is this a healthy lake or an unhealthy lake? Explainyour answer in 5-7 sentences. BE SURE TO INCLUDE aprediction about what the lake looks like (Do youthink there are there any bio-indicators? Do youthink there could possibly be an algal bloom?)

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