1. HW: Study for the Unit Test tomorrow. Bring #2 pencil to class with you. Index Cards = + 2 points!
Do Now: /7/16
Take out your graphing homework
Get ready for Current Events
Complete the Waste Removal hand out

2. Current Events Roll Call # 21-24

3. Skin
Kidney
Lung
Ureter
Bladder
Urethra

5. The Effect of Time (in Months) on the Population of Deer (Number)
Short Summary:
As the months got colder, the number of deer decreased.
Sept Oct Nov Dec Jan Feb
Time (Month) X

7. As the number of hours spent studying increases, so does the grade.
The Effect of Hours Studying on your Grade Y
Grade (%)
Summary:
As the number of hours spent studying increases, so does the grade.
100 90 80 70 60 50 40 30 20 10 X
# of Hours Studying
Hours Studying
Grade
The Effect of Hours Studying on your Grade

8. Enzyme activity increases until 40 degrees, then it decreases.
The Effect of Temperature on Enzyme Activity 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
Enzyme Activity (%)
Summary:
Enzyme activity increases until 40 degrees, then it decreases. X
Temperature (C⁰)
Temperature
Enzyme Activity
The Effect of Temperature on Enzyme Activity

9. Chemical Waste Lab – pgs 36-39
Part A
Testing for moisture
1. Examine dry cobalt chloride paper and record color.
2. Place a drop of water on the paper.
Record the color after the paper has been exposed to
moisture.
Cobalt Chloride Paper
Color
Dry
Wet (distilled H20)
Blue (-)
Pink (+)

10. Chemical Waste Experiments
Part B
Testing for salt
1. Fill a test tube ¼ with distilled water
2. Fill a second test tube ¼ with salty water
3. Add 1 drop of silver nitrate to each tube.
4. Record color of both tubes in data table.
Wear safety goggles!
Type of Water
Color
Distilled Water
Salty Water
Clear (-)
Cloudy (+) + -

11. Chemical Waste Experiments
Wear safety goggles!
Part C
Testing breath lungs for moisture and salt
1. Place a dry piece of cobalt chloride paper in a plastic baggy.
2. Hold the baggy to your mouth and breathe into it 5 times.
3. Hold the baggy closed for 2 minutes. Record the color.
4. Tear the baggy open and soak up any liquid inside.
Roll up the cotton and fit it into a test tube.
Fill the tube ¼ with distilled water. Add 1 drop of Silver
Nitrate. Record the results.
Cobalt Chloride Color
Water given off?
Silver Nitrate Color
Salt
given off?
Part C:
Breath from lungs
Pink (+)
yes
Clear (-) no

12. Chemical Waste Experiments
Wear safety goggles!
Part D
Testing skin perspiration for water and salt
Hold a piece of dry cobalt chloride paper in your hand with your fist closed for 5 minutes. Record the results.
Rub the palm of your hand with clean cotton, roll it up and place in test tube. Fill the tube ¼ with distilled water.
Add 1 drop of silver nitrate. Record the results.
Cobalt Chloride Color
Water given off?
Silver Nitrate Color
Salt
given off?
Part D:
Skin Perspiration
Pink (+)
yes
Cloudy (+)
yes

13. Chemical Waste Experiments
Wear safety goggles!
Part E
Testing urine for water and salt
Fill a test tube ¼ full of “urine”. Tip the tube and insert cobalt chloride paper to test for moisture. Record results.
Add 1 drop of silver nitrate to the contents of the test tube. Record the results for the presence of salt given off by the kidneys.
Cobalt Chloride Color
Water given off?
Silver Nitrate Color
Salt
given off?
Part E:
Urine from Kidneys
Pink (+)
yes
Cloudy (+)
yes

14. Kidneys Lungs Skin Yes Water Salt Conclusion Questions
Name three organs that give off waste chemicals:
_____________ _____________ ____________
Do the lungs help to get rid of wastes? ____________
a. What waste(s) was shown to be given off by the
lungs in this experiment?
________________
b. What waste(s) was shown not to be given off by the
Kidneys Lungs Skin
Yes
Water
Salt

15. Yes Water and Salt Yes Water and Salt Conclusion Questions
3. Does the skin help to get rid of wastes? ___________
What wastes were shown to be given off by the skin
in this experiment?
___________________________________________
4. Do the kidneys help to get rid of wastes? ___________
What wastes were shown to be given off by the kidneys
Yes
Water and Salt
Yes
Water and Salt

16. Yes Yes Organ Water Salt Carbon Dioxide Urea Lungs + - Skin Kidneys
5. A scientist drew up the following chart based on her results from a similar experiment. The chart appears as follows:
Organ
Water
Salt
Carbon Dioxide
Urea
Lungs + -
Skin
Kidneys
Do your results agree with the scientists for the test on water? __________
b. Do your results agree with the scientists for the test on
salt? ___________
Yes
Yes

17. Skin & Kidneys Lungs Lungs, Skin & Kidneys Skin & Kidneys Organ Water
6. Examine the chart again.
Organ
Water
Salt
Carbon Dioxide
Urea
Lungs + -
Skin
Kidneys
List the organs that give off urea
_____________________________________________
List the only organ that gives off CO2
List those organs that can give off water
List those organs that can give off salt
Skin & Kidneys
Lungs
Lungs, Skin & Kidneys
Skin & Kidneys

18. Review Packet

19. E
or Voice Box C A B D I J F G H

20. M K N L S P T
, forms Urea Q R
*Dialysis for kidney damage patients to filter for them.

21. Before we answer the next question… Recall the Breathing Process Demonstration!

22. What happens in your lungs when…
Pressure (Chest cavity) Volume (in Lungs) Air Movement
Decreases
Increases
Moves In
Increases
Decreases
Moves Out
During inhalation, rubber sheeting (diaphragm) is
pulled down (expands), air pressure decreases, volume increases, and air moves in.
Chest cavity
Lungs
Trachea
Bronchi
Diaphragm

23. Rubber sheeting (diaphragm) is pulled down (contracting)  balloons (lungs) inflate because pressure decreases and volume increases, forcing air to flow in (inhale)
Rubber sheeting (diaphragm) pushed in (relaxing)  balloons (lungs) deflate because pressure increases, volume decreases and air is forces out (exhale)

24. Moistens, warms and filters the air
Pharynx
Larynx
Trachea
Bronchi
Bronchioles
Exchange of oxygen and carbon dioxide with blood

25. Kidney Ureter Bladder Urethra Carbon dioxide Heat Salt Heat Urea Salt
Excretes:Water
Carbon dioxide
Heat
Produces: Urea
Excretes: Water
Salt
Heat
Urea
Excretes: Water
Salt
Heat
Urea

26. Kidney
Ureter
Bladder
Urethra
Daily Light Final Height of Plant
Temperature Rate of Glacier Melting
# Min. Exercising Heart Rate

27. Nostrils
Nasal Passage
Mouth
Pharynx
Epiglottis
Pleura
Larynx
Lung
Trachea
Alveoli
bronchiole
Diaphragm
Bronchi
Oxygen
Water
Carbon Dioxide
Oxygen

28. BrainPOP!
The Excretory System
The Respiratory System