WARM-UP
• Update your Table of Contents
• Write your homework!
• Get a list of Vocab Set 4 off the front
table
Date Session
#
10/23
21
Activity
Page
#
Water Quality Indicator Note guide
36
Water Diagnosis Chart
37
SOMEBODY CALL THE
DOCTOR!
AN INTRODUCTION TO
WATER HEALTH
HOW DO WE KNOW IF OUR
WATER IS HEALTHY?
There are PHYSICAL, CHEMICAL &
BIOLOGICAL indicators that work together to
determine the health of the water
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.
TEMPERATURE
Causes:
• 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
TURBIDITY
Causes:
• 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 LAB
Levels:
06 is acidic
7 is neutral
814 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
pH Value
Acid, Base or
Neutral?
Windex
Tap
Water
Your
Mouth
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 OXYGEN
Causes:
• 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
NUTRIENTS
Causes:
• fertilizer run-off
• animal waste run-off
• detergent waste from industry
Effects:
• EUTROPHICATION
• low DO
EUTROPHICATION FLOW CHART
EXCESS NUTRIENTS  ALGAL BLOOM (POND SCUM)  DARKNESS BELOW
SURFACE  PHOTOSYNTHESIS STOPS DECOMPOSERS & OTHER ORGANISMS
USE 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
“GAME CHANGERS”
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)
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.
Nutrients
pH
Nutrients
pH
Nutrients
pH
Nutrients
pH
Nutrients
pH
Nutrients
pH
Nutrients
pH
Nutrients
Nutrients
pH
Nutrients
pH
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
#
10/25
22
Activity
CHMS Creek Stewardship Survey
Page
#
38
CHMS WATERSHED SURVEY: DAY 1
• 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 2
• 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
HOMEWORK
• Vocab Set 4 – Day 2
• Bring rain boots/shoes you can get dirty
and appropriate clothing for class next
Tuesday!