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

SOMEBODY CALL THE DOCTOR!

AN INTRODUCTION TO WATER HEALTH

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!