2. FIELD TRIP RECAP!  Sam Houston Ship Channel Boat Tour  Last Organic Outpost Farm  Allen’s Landing

3. WATER QUALITY TESTING LAB Monda y sample Wed’s sample upstream downstrea m Dissolved Oxygen, pH, nitrates, phosphates 3 trials Kits and procedures

4. WATER QUALITY TESTS TestPollutantSourceeffect Nitrates/phosphatesFertilizers, sewageYards, farms, sewage treatment plants eutrophication/ low oxygen pHAcids or basesYards, streets, factories Organisms can’t survive TurbidityExtra floating dirtConstruction, yards, farms Plants can’t photosynthesize

5. WATER QUALITY TESTS  Dissolved Oxygen – a GOOD THING!!!!  More DO = more aquatic life (more cellular respiration)  Minimum amount: 4ppm for fish to live

6. TIME TO WRITE THE HYPOTHESIS!  If (independent variable) THEN (dependent variable)

7. LAB TESTING GROUPS:  Make sure entire first page is complete – 5 minutes!

8. COMPILE CLASS DATA  13 Was your hypothesis supported or refuted?

9. PICK UP YOUR INTERACTIVE NOTEBOOK  Complete analysis on your own.  Major Grade  Complete SentenceS!