FIELD TRIP RECAP!

Sam Houston Ship Channel Boat Tour

Last Organic Outpost Farm

Allen’s Landing

WATER QUALITY TESTING LAB

Monday sample

Wed’s sample

upstream downstrea

m

Dissolved Oxygen, pH,

nitrates, phosphates

3 trials

Kits and procedures

WATER QUALITY TESTS

Test Pollutant Source effect

Nitrates/phosphates Fertilizers, sewage Yards, farms, sewage treatment plants

eutrophication/ low oxygen

pH Acids or bases Yards, streets, factories

Organisms can’t survive

Turbidity Extra floating dirt Construction, 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!