PPT ON ENVISCI

1. CYNTHIA V. ANDAYA
Philippine Science High School
Main Campus

2. Why Teach Environmental Science?
1. Environmental topics relate to
everyday life.
 Air
 Water
 Energy Resources
 Waste Management

3. 2. It promotes environmental
literacy among students.
 So they can make informed decisions
to protect themselves, their families,
and their communities against
environmental problems.

4. 3. We live in a vulnerable
world.
 How we care for the environment now
will determine our future.

5. How should we teach
Environmental Science?
1. Conduct investigative activities.
Apply the methods of science – observe,
determine the problem, gather and
analyze data, infer, make conclusions.

6. 2. Bring students outside the classroom.
 to observe and understand the local environment
 to know what’s going on in their community

7. 3. Teach students how to think.
 Provide situations / exercises where they will explore
different perspectives of an environmental issue.
Role –play.

8. 4. Do service – learning.
Combine environmental lessons with community service:
waste recycling programs
water quality monitoring
cleanliness campaign
promote environmental awareness through various media

9. Create a Primer !

10. 5. Watch videos.

11. 6. Update using newspapers /
magazines, the Internet
Know about what’s going on in the community.
 Cebu City ‘not yet ready for plastic bags ban’
By Doris C. Bongcac, Cebu Daily News, 11:35 am,
Sunday, June 3, 2012
www.inquirer.net
 Climate Change is Happening
http://www.epa.gov/climatechange/basics/

12. Major Environmental Topics
The Earth’s Atmosphere
The Earth’s Hydrosphere
Soil and Land Resources
Energy Resources
Integrated Waste Management

13. The Earth’s Atmosphere
 Activities:
 Graphing the atmospheric layers
(Distance from the earth’s surface vs.
Temperature)
 Understanding ozone formation and
depletion
 Air Quality Monitoring
(particulate matter in air)
 Film viewing: The Inconvenient Truth

14. UVb
radiation
Oxygen Molecule
Stratospheric UV Filtering
Ozone Molecule
O2 + UVb radiation  O + OO2 + O  O3 + Heat
Stratospheric OzoneFormation

15. Stratospheric OzoneFormation

16. StratosphericOzone Concentration
1mm = 100 dobson units
Std: 300 dobson
units
1 mm

17. Stratospheric OzoneDestruction
CFCl3 + UV  CFCl2 +
ClClO + O3  O2 + O2
A Single Atom of Cl can destroy up to
100,000 ozone molecules

18. The Earth’s Hydrosphere
 Tap water vs. Bottled water
 Groundwater Movement
 Water quality monitoring using the GLOBE protocols
(Global Learning and Observations to Benefit the
Environment)
 Visit to a Water Filtration/Treatment Plant

19. Properties of Water
•Water is a polar substance, with hydrogen bonds that make the forces of
attraction between the molecules of water stronger
Source: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/H/HydrogenBonds.html

20. •It has a high heat capacity--it can store a large amount of heat
without a large change in temperature.

21.  It has a high heat of
vaporization
(540 calories per gram of
H2O).
 It absorbs a large amount
of heat energy as it
evaporates.
 It also releases a large
amount of heat as it
condenses.

22. •boiling point at sea level = 1000C
melting point = 00C
 It has a high
surface tension,
and a high
wetting ability.

23. Major Indicators of Water Quality
 Transparency
 Water temperature
 Dissolved oxygen
 pH
 Electrical Conductivity
 Salinity
 Alkalinity
 Nitrate

24. Soil and Land Resources
Soil Characterization
Growing a Vegetable Garden
Hydroponics

25. Energy Resources
A Study of a Coal-Fired Power Plant
(Production and Distribution of
Electricity)
Estimating Electricity Consumption
A Study of a Geothermal Power Plant

26. Integrated Waste Management
Types of Wastes – Biodegradable,
Nonbiodegradable
Plastics in Our Lives (Comparing
Polymers)
Reuse, Recycle

27. Published and distributed by C & E Publishing, Inc.