Study Notes on Scientific Method and Environmental Science

EARTH AND ITS ENVIRONMENT - LECTURE WEEK #2

SCIENTIFIC METHOD

Introduction to the Scientific Method

  • Purpose: The scientific method is a systematic approach that scientists use to solve problems and understand environmental issues.

Definition of Science

  • Science is described as an organized way of studying the natural world, accumulating knowledge gained through studies.

  • It operates under unchanging rules, theoretically governed by reproducible methodologies.

  • Science does not incorporate the supernatural; it is fundamentally evidence-based, relying on measurable observations.

  • Scientific ideas are regarded as currently 'supported' rather than definitively 'proven', and are 'accepted' rather than taken on faith.

Goals of Environmental Science

  • The goal is to comprehend and resolve environmental problems to a feasible extent, including:

    • Ecosystem functions

    • Air Pollution

    • Water Pollution

    • Toxic Chemicals

    • Climate Change

    • Resource usage

Historical Context

Industrial Revolution

  • Time Period: 1800s

  • Key Developments:

    • Transition to fossil fuels for energy and heat.

    • Technology advancements made life easier and contributed to longer life spans due to medical progress.

    • Urbanization increased as populations moved from rural areas to cities, intensifying human impacts on the environment.

Environmental Dilemma

  • Key Question: "When did it start to go wrong?"

  • An objective noted is the Goal for 2030 regarding resource management and sustainability.

Main Environmental Problems

Resource Depletion

  • Discusses renewable vs. nonrenewable resources:

    • Renewable resources: Can theoretically last indefinitely if managed correctly.

    • Nonrenewable resources: Limited in availability; examples include fossil fuels and various metals (iron, aluminum, copper).

Population Explosion

  • Notable population increases in the 20th Century and anticipated growth into the 21st Century.

Steps of the Scientific Method

  1. Observation

    • Scientists begin with real-world observations, identifying patterns or anomalies (example: fires in the forests of Mato Grosso).

    • Collect preliminary data to frame the understanding.

  2. Question

    • Clearly define a question or statement to study based on initial observations. For example:

      • Research Focus: Why did certain individuals die in a specific area?

      • Example Question: Is the death of these individuals related to water contamination?

  3. Hypothesis

    • An educated guess that provides a potential explanation for observations. Examples include:

      • Hypothesis: "Individuals died in this area due to contamination from Cholera-tainted water."

    • It's essential to keep the hypothesis testable; rejecting a hypothesis is a part of the scientific process and can lead to new insights.

  4. Investigation

    • Conduct a literature review to understand existing research on the topic and identify what has already been observed in similar situations.

  5. Data Collection

    • Determine what types of data are necessary for analysis. Sources of data include:

      • Pre-existing literature

      • Information available online (e.g. Google)

      • Original data created through experimentation.

  6. Data Analysis

    • Analyze the collected data and calculate necessary statistics to derive conclusions.

    • Not just providing results; interpreting their significance is critical, regardless of how evident they may seem.

  7. Drawing Conclusions

    • Discussions of results must lead to reproducibility; all methods and procedures should be clearly documented to allow peer verification.

    • Clarity is crucial to ensure transparency in presenting the findings.

  8. Communication of Results

    • Disseminate findings through laboratory reports, scientific journals, and peer reviews.

    • Importance of peer review in validating research.

Applied Example: Understanding Student Progress

Case Study

  1. Observation: Both students and faculty struggle to interpret requirements and navigate too many choices available in majors.

  2. Question: Is there a method to enhance the presentation of student progress?

  3. Hypotheses: A solution exists to streamline reporting and analysis of academic progress.

  4. Data Collection: Engage in an understanding of existing program structures and requirements.

Results and Analysis Presentation

  • The academic syllabus for biology demonstrates a structured credit system aimed to clarify student progress over various semesters, including credit allocation and course relationships.

    • Credits distribution:

    • Year 1: 30 credits.

    • Year 2: 30 credits.

    • Year 3: Variable credits based on major requirements.

Conclusions and Improvements

  • Continuous refinement of methods is essential to facilitate tracking and advising. The documentation serves as a means to:

    • Reduce advising errors

    • Empower students to manage their academic journey effectively.

Final Thoughts

  • The scientific method serves not only as a research framework but also as a structural approach applicable in educational contexts, highlighting the importance of systematic investigation for problem-solving in the environment as well as academia.