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WARM-UP
• Update your Table of Contents
• Write your homework!
• Get a list of Vocab Set 4 off the front table
Date Session#
Activity Page#
10/23 21 Water Quality Indicator Note guide 36
Water Diagnosis Chart 37
There are PHYSICAL, CHEMICAL & BIOLOGICAL indicators that work together to
determine the health of the water
HOW DO WE KNOW IF OUR WATER IS HEALTHY?
TEMPERATURE• Definition: How hot or cold the water is due to
kinetic energy
•Healthy:The water is the right temperature to support the things that live in it.
• Unhealthy:The temperature is too high (970F) or too low (320F) and will hurt or
kill things that live in it.
TEMPERATURECauses:•loss or gain of shade•heat pollution•seasonal changes/global changes
Effects:•decreased levels of dissolved oxygen (DO)•increased bacteria levels•increased algae growth
TURBIDITY
• Definition: A measure of how cloudy water is due to “stuff” in it.
• Healthy: Clear, clean water = 1 NTU
• Unhealthy: Sediment or pollution that makes the water cloudy = 5 NTU
TURBIDITYCauses:
• erosion
• run-off
• disturbance of water
• algae growth
Effects:
• increased temperature
• decrease in DO
• clogs gills in organisms
PH • Definition: The acid content of the water
• Healthy: Has to be the correct level for
the type of water.
Most Freshwater: 6.0 8.0
• Unhealthy: Is not the right level for
the type of water or to support life.
PH Causes:
• acid rain
• minerals washing into water
Effects:
• death to sensitive plants and animals
PH MINI LABLevels:
06 is acidic
7 is neutral
814 is basic
PH MINI LAB• To demonstrate the idea of pH, you will test 4
things and record their pH level and determine if they are an acid, base or neutral:
Lemon Juice
Windex Tap Water
Your Mouth
pH Value
Acid, Base or Neutral?
DISSOLVED OXYGEN• Definition: oxygen gas dissolved in
the water
• Healthy: Right amount dissolved oxygen = lots of life 4-5 ppm is optimal
• Unhealthy:Low dissolved oxygen = little or no life
DISSOLVED OXYGENCauses:
• increased temperature
• decaying plant matter
Effects:
• less diversity of species
• fish kills
NUTRIENTS• Definition: Something that is usually good, but can
become toxic when there is too much
• Healthy: The right amount of nitrates, phosphates,
sunlight = lots of life
• Unhealthy: Too many or not enough nutrients = little or no life
• nitrates = above 1 ppm
• phosphates = above .003 ppm
NUTRIENTSCauses:
• fertilizer run-off
• animal waste run-off
• detergent waste from industry
Effects:
• EUTROPHICATION
• low DO
EUTROPHICATION FLOW CHARTEXCESS NUTRIENTS ALGAL BLOOM (POND SCUM) DARKNESS BELOW
SURFACE PHOTOSYNTHESIS STOPS DECOMPOSERS & OTHER ORGANISMSUSE UP OXYGEN DEATH
BIO-INDICATORS
• Definition: Macro-invertebrates that live in the water and are sensitive to pollution
• Healthy: A lot of bio-indicators = healthy water
• Unhealthy: Little or no bio-indicators = unhealthy water
BIO-INDICATORS
Causes:
• increased levels of pollution
Effects:
• damages food chain
• loss of organisms
MERCURY• Natural element that has
increased to toxic levels due to industry
• Usually affects people through eating fish from mercury contaminated water
• Causes kidney damage & brain/neurological disorders
“GAME CHANGERS”
COLIFORM BACTERIA
• commonly found in water, soil and vegetation
• usually harmless but can indicate the presence of other harmful forms of coliform bacteria
(fecal matter & E. Coli)
“GAME CHANGERS”
YOU BE THE DOCTOR!• Use the notes you just took to:
1) Diagnose the possible cause of the water issues on the Water Quality Checklist
2) Decide if the water is healthy or unhealthy
VOCABULARY SPLASH
• All of the vocabulary words will be on the slide.
• Study the words for 30 seconds.
• Next slide will be missing 1 of the words from the original slide.
• Write down the word that is missing and its definition as quickly as possible.
Mercury
pH
Coliform
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
Mercury
pH
Coliform
Nutrients
Temperature
Turbidity
Dissolved
Oxygen
mercury
pH
Coliform
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
mercury
pH
Coliform
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
mercury
pH
Coliform
Nutrients
Temperature Bio-Indicators
Dissolved
Oxygen
mercury
pH
Coliform
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
pH
Coliform
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
mercury
Coliform
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
mercury
pH
Coliform
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
mercury
pH
Nutrients
Temperature
Turbidity
Bio-Indicators
Dissolved
Oxygen
HOMEWORK• Vocab Set 4 – Day 1• Re-send presentations if you want to
present on Thursday!• Bring rain boots/shoes you can get
dirty for class nextTuesday!
WARM-UP• Update your Table of Contents
• Write your homework, and get your vocab cards out to be checked
Date Session#
Activity Page#
10/25 22 CHMS Creek Stewardship Survey 38
• To prepare for our trip to the creek we need to collect observations about the topography and condition of the CHMS school grounds. (What goes on up here that may be affecting the creek at the bottom of the hill behind the school?)
When we get outside, you may bullet point these observations, you may also wish to include sketches or pictures of areas that may impact the creek.
• Based on what you have observed, your knowledge of water quality indicators and the way humans impact the hydrosphere...what can you predict is the condition of the creek water? Briefly describe what specific conditions you expect to find and then transfer your predictions to the data table on the back.
CHMS WATERSHED SURVEY: DAY 1
• Use your notes and observations to complete the following:
• Your hypothesis: (what can you predict the condition of the creek water will be?)
“I predict that ___________________ will be at unhealthy levels in the creek because…….
• Complete the prediction section of the data table: (what specific conditions do you expect to find?)
(+) indicates that you predict levels for that specific indicator will be healthy
(-) indicates that you predict levels for that specific indicator will be unhealthy
CHMS WATERSHED SURVEY: DAY 2
HOMEWORK• Vocab Set 4 – Day 2• Bring rain boots/shoes you can get
dirty and appropriate clothing for class next Tuesday!