E-ENVI-SCI((JANUARY(31,(2022((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((((PRELIM(1ND((Lecture(Material((
Introduction to Environmental Science
CHED MEMORANDOM ORDER NO. 20 SERIES OF
2013
General Education Curriculum: Holistic Understandings,
Intellectual and Civic Competencies
GEC SUBIECTS:
1. Understanding the Self
2. Readings in the Philippine History
3. The Contemporary World
4. Mathematics in the Modern World
5. Purposive Communication
6. Art Appreciation
7. Ethics
8. Science, Technology and Society
Environmental science
• Is an interdisciplinary field of study that deals with the
interactions of the physical, chemical and biological
forms of the earth.
• Interdisciplinary interconnected
Environmental Science is a broad interdisciplinary field
includes the natural sciences and the social sciences
Environmental science
Ethics
Ecology
Biology
Chemistry
Atmospheric science
Oceanography
Geology
Anthropology
archaeology
Sociology
History
Political science
Engineering economics
PHYSICAL PARAMETERS:
1. Color
2. Odor
3. Temperature
4. Solids (Residues)
5. Turbidity
6. Oil Content
7. Grease Content
CHEMICAL PARAMETERS:
1. Ph
2. Conductivity
3. Dissolved Oxygen
4. Nitrate
5. Chemical Oxygen Demand (COD)
6. Biochemical Oxygen Demand
7. Pesticides
BIOLOGICAL PARAMETERS:
1. Coliforms
2. Pathogens
3. Viruses
THE SCIENTIFIC METHOD
• A method of research in which a problem is identified,
relevant data are gathered, a hypothesis is formulated
from these data, and the hypothesis is empirically
tested.
• Step by step process that able to solve problems.
Scientific method
Observations
Questions
Hypothesis
Predictions
Test
Results
Fail to reject hypothesis results - hypothesis
Reject hypothesis results - predictions
1. Observation
2. Question/Define Purpose
• The thing you want to know question you want to
answer
3. Construct Hypothesis
• Educative guess or prediction of the outcome
experiment. This guess can be tested by performing an
experiment.
• Ho Null Hypothesis
• H1 - Alternative Hypothesis
4. Predictions and Collect Data
• Perform the said experiment
5. Test/Analyze Data
• Review and analyze the data you collect during the
experiment
6. Results/Conclusion
• Determine if your hypothesis was correct or not
- For Example!
Using the steps in the scientific method make a research
proposal on the topic "Growing Bean Plants"
Growing Bean Plants
1. Observation
• How does this bean plant propagate?
2. Question/Define Purpose
• I want to know if bean plant will grow more quickly
outside or inside.
3. Construct Hypothesis
• Null hypothesis: There is no difference between
growing a bean plant indoors and outdoors.
• Alternative Hypothesis: There is significant difference
between growing a bean plant indoors and outdoors.
4. Predictions and Collect Data
• Plant four bean plant in identical pots using the same
type of soil. Place two of these in an outdoor location
and place the other two in an indoor location.
• Care the plants in an identical way, like giving the
same amount of water. Then each day for the three
weeks of experimental period.
• Carefully record the size of each plant in a notebook.
