Commodity

1
Commodity

• Something of value
• Our soil is a great ________ that we must
  conserve.

2
PCB

• A dioxin
• There have been many _______ found in the great
  lakes from factories in the area.

3
Sediment

• Material that settles to the bottom.
• In the lab Seeing is Believing sand acted as a
  ____________.

4
Leaching

• To pass thru an area while the water carries
  substances away
• Before putting liners in the landfill, many
  pollutants were _______ and carried into our
  drinking water.

5
Organic

• Anything that comes from living organisms.
• Dead animals and manure are _______ fertilizers
  because they come from living things.

6
Acid Rain

• Precipitation with a lower Ph than normal
• Since statues are made of marble, the __________
  in industrial areas over long periods of time are
  causing the statues to decay or break down.

7
Erosion

• The washing away of soil by wind, rain and ice.
• During the Great Depression the wind storms in
  the Midwest caused massive ____ causing the crops
  to fail.

8
Food Chain

• A model showing the energy from food as it passes
  from one organism to another.
• When DDT was used to kill the mosquitos in
  Panama, the DDT eventually showed up in birds and
  fish. DDT moved thru the _____.

9
Carcinogenic

• Causing cancer
• Certain dioxins are known to be _____.

10
Lead Solder

• Used to hold metal pipes together before 1977.
• The _______ of the pipes in our older home had to
  be replaced.

11
Nonpoint source pollution

• When the exact source of pollution could not be
  located.
• Runoff from the highways carries salt and oil and
  gasoline, this is an example of ________.

12
Aquifer

• A water bearing area underground
• In Plainfield we are dependent upon an ____ for
  our water.

13
Solution

• A combination of liquid and solid together.
• The sugar and water mixed to make a ____ of sugar
  water.

14
Filtration

• Solid particles are trapped
• To get rid of floating particles in our water
  the pollution treatment plant uses _____ to catch
  those particles.

15
Mercury

• A heavy silver metal that is a liquid at room
  temperature.
• ______ was commonly used in thermometers, now we
  use petroleum.

16
Thermal Pollution

• Discharged water is put back into a natural body
  of water is warmer than the water already there
  and is harmful to wildlife.
• Nuclear power plants were the source of _____ and
  caused a process called eutrophication.

17
Sewage

• Refuse produced by animals
• Runoff from farms will carry _______ from the
  animals to our drinking water.

18
Estuaries

• An area where freshwater runs into saltwater.
• The southern tip of Florida is called an ____ and
  is the home of many birds, reptiles and plants.

19
Toxin

• Any poisonous substance
• Our water is laden with ____ that come from our
  homes, factories and cars.

20
Irrigate

• Watering crops with water from another place.
• Egypt can grow food for their people by ___ the
  crops with water from the Nile.

21
Herbicide

• Weed killer
• My neighbor used ________ to take care of the
  dandelions in his yard.

22
What type of pollution?
23
Lead

• Originates in paints
• on pipes in older homes
• In soil next to highways from fuel exhaust
• Shows up in our food chain

24
Pesticides

• Sprayed on worlds food supply
• More than 4 billion pounds are sold each year
• Used to eliminate insects

25
Thermal pollution

• Caused by industries and power plants
• Water is used to cool machines and then released
  back into a natural body of water at a higher
  temperature than the original water.

26
Toxins

• They leak from waste sites and accidental
  chemical spills
• Invisible to the eye
• Difficult to get rid of
• DDT is an example

27
Sediment

• Occurs when toxic chemicals pour into rivers and
  lakes,
• Heavy particles settle to the bottom
• Creating poisonous muck

28
Sewage

• Comes from animal and human wastes
• Becomes a big problem in times of a flood
• Can cause eutrophication

29
Leaching

• Water seeps or drips from the area where
  pollutants are stored.
• The water may drip or seep into ground waster or
  surface waters, polluting it

30
Acid Rain

• Main cause is from fuel emissions (driving cars)
• It can harm buildings and statues and wildlife
• Causes the acidification of lakes, rivers and
  streams
• The Ph is lower than usual

31
Dioxins

• Come from chlorinated hydrocarbons (bleach)
• Paper factories are the usual source.

32
What happened in that lab?
33
Sediment

• In Seeing is believing lab, what did the sand
  represent? Why?

34
Toxins

• What did the sugar represent in Seeing is
  Believing? Why?

35
Cyanide or Dioxins

• What did the food coloring represent in the
  Seeing is Believing lab and Why?

36
The next set of questions will come from the fish
respiration lab.

• Starting temperature of the water

• What is the control in this lab?

37
Colder and warmer temperatures

• What are the variables in the fish lab?

38
It increased

• As the temperature increased and got warmer, what
  happened to the respiration rate of the fish?

39
It decreased

• What happened to the fishs respiration rate as
  the temperature dropped?

40
7, neutral

• What should be the Ph of distilled water?
• What is that considered on the scale?

41
1-14

• What is the numerical scale for pH?

42
1-3

• What is the pH of vinegar?

43
Sewage, grass clippings, leaves

• Give one example of a natural fertilizer.

44
Chalk sea shell
Acid Rain

• In Acid with stuff,
• What pollution were we assimilating?
• What two items were most effected by the vinegar?

45
Look at your handouts, what did you read?

• List 4 layers that will make up permeable layers.

Soil Sand Pebbles Clay
46
Solid rock

• What will make up Impermeable layers?

47
We have not reviewed everything,

• Be sure to go back and check questions on your
  syllabus!
• If absent on a lab day you are still responsible
  for the information from the syllabus!