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

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

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

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

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

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

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

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