![3/20 A/B Day
LEQ: How do we show our stewardship for
the limited natural resources in our
hydrosphere?
1. Why would you rather have a lake house next to a
lake with low turbidity?
2. What would you want the pH of your drinking
water to be?
3. What causes algal blooms?
4. What are bio-indicators used for?
5. Copy and complete: As the temperature of water
increases, the amount of dissolved oxygen
[increases/decreases].](https://image.slidesharecdn.com/320-120320203410-phpapp01/85/3-20-12-1-320.jpg)
3/20/12
- 1. 3/20 A/B Day LEQ: How do we show our stewardship for the limited natural resources in our hydrosphere? 1. Why would you rather have a lake house next to a lake with low turbidity? 2. What would you want the pH of your drinking water to be? 3. What causes algal blooms? 4. What are bio-indicators used for? 5. Copy and complete: As the temperature of water increases, the amount of dissolved oxygen [increases/decreases].
- 2. Draw this in your notes:
- 3. Which one is which?! Land and Water on Earth Freshwater and Saltwater Distribution of Freshwater
- 4. Blue: Water (71%) Green: Land (29%)
- 5. Saltwater F Blue: Saltwater (97%) Red: Freshwater (3%)
- 6. Red: Frozen (70%) Green: Groundwater/Aquifers (29%) Purple: Lakes, Rivers, etc. (1%)
- 7. Today’s LEQ: How do we show our stewardship for the limited natural resources in our hydrosphere? By the end of today, you should be able to… 1. List three ways that we are being stewards for our environment 2. Explain two ways that we treat wastewater 3. Explain the trade-offs that we face by protecting our hydrosphere
- 8. Focus Vocabulary: 146. Stewardship 147. Wastewater Treatment Plant 148. Septic System 149. Water Quality Standards 150. Trade-Off
- 9. Activating Strategy: What do you know about the oil spill in the Gulf of Mexico last year?
- 10. Discovery Education: Disaster in the Gulf: A Race against Time
- 11. CONTEXT CLUES: “She is a steward for the environment. She makes sure that she recycles, conserves electricity, and teaches others about ways to care for the earth. ” “He shows great stewardship for animals. He works at an animal shelter on the weekends, raises money for homeless dogs and cats, and helps pets get adopted into a good home.” Stop and Jot: Write your own definition of
- 12. How could you be a steward for the environment if there was another oil spill?
- 13. Ways YOU can be a steward for our hydrosphere: • Turn off the water while brushing your teeth • Put a bottle of rocks in your toilet tank so that less water is used each flush • Only wash full loads of laundry • Take shorter showers • Only run your dishwasher when it is full
- 14. How do we show our stewardship for the hydrosphere?
- 15. How do we show our stewardship for the hydrosphere? We PASS LAWS We MONITOR We TREAT AND water : water: REGULATIONS to protect water:
- 16. We MONITOR water : -we measure the quality of the water around us to make sure that it stays healthy Ex: -pH levels What are the different things we -bioindicators measure to tell if our water is -nitrate levels healthy or unhealthy? -temperature -dissolved oxygen level -turbidity
- 17. What can we determine about the water quality of this lake over time? Is it getting healthier or less healthy and how do you know?! Tempera Turbidity Dissolved Acidity Nutrient Algae ture Oxygen Level Count March 65 30 NTU 10 ppm pH = 7.1 Nitrates: 100 degrees .1 ppm colonies April 80 55 NTU 11 ppm pH = 9.2 Nitrates: 300 degrees .96 ppm colonies May 90 120 NTU 15 ppm pH = Nitrates: 350 degrees 12.4 1.5 ppm colonies
- 18. We TREAT water: Wastewater treatment plant: removes city waste from water and puts clean water back into lakes or tributaries
- 19. How does a wastewater treatment plant work?
- 20. Discovery Education: The environmental impact of the toilet
- 21. Life before wastewater treatment plants… Many cities had no sewers and relied on nearby rivers or occasional rain to wash away sewage. In some cities, waste water simply ran down the streets, which had stepping stones to keep pedestrians out of the muck, and eventually drained as runoff into the local watershed. This was enough in early cities with few occupants but the growth of cities quickly overpolluted streets and became a constant source of disease.
- 22. Many underdeveloped countries do not have wastewater treatment systems today. Open Sewer
- 23. We TREAT water: Wastewater treatment plant: removes city waste from water and puts clean water back into lakes or tributaries Septic system: removes waste from water you use in your house
- 24. Septic tank- drain field http://www.youtube.com/watch?v=FK_pm70Ij1U @2:04 seconds
- 26. Why is it important to treat water?
- 27. We PASS LAWS AND REGULATIONS to protect water: Clean Water Act: Pick THREE key facts - about each one and - write them in your graphic organizer! Environmental Protection Agency: - - North Carolina Water Quality Standards: - -
- 28. Water Quality Standards in North Carolina
- 29. Trade-Off: good things and bad things that go along with our decisions Staying up late:
- 30. Should our water quality standards in North Carolina be STRICT or NOT STRICT? Trade Offs: -Keeps our -costs us a lot of drinking water money to regulate cleaner and enforce -Keeps our aquatic -can cause problems for farmers and the and terrestrial North Carolina food webs healthy economy
- 31. Make a brochure to explain your decision! Your brochure should include: -3 things that we are currently doing to be stewards for our hydrosphere -4 reasons for why you think our water quality standards should be more strict or less strict
- 32. Summarizer: Two students are having an argument. Kesha says that we are doing everything we can to be stewards for our hydrosphere. Ron says that we are not doing nearly enough. Write 5-7 sentences to explain which student you think is correct. Be sure to give at least 4 reasons explaining WHY you chose this opinion.