Chapter 0: The Scientific Process Flashcards

Conceptual Foundation and Historical Evolution of Science

• Science is defined as the utilization of evidence to construct testable explanations and predictions regarding natural phenomena. It also encompasses the body of knowledge generated through this rigorous process.
• The fundamental characteristic of science is scientific inquiry, which entails the planned and deliberate investigation of the natural world.
• Historical progression of scientific thought:
  • Around $600\,BC$, ancient Greeks initiated attempts to explain natural phenomena through logic rather than attributing them to the supernatural.
  • Hippocrates, a prominent Greek physician, redirected medical focus toward understanding natural causes of disease and advocated for natural remedies. He utilized meticulous medical histories and symptomatology, relying on reason and empirical experience to diagnose and treat patients.
  • The modern ethical code for the medical profession, known as the Hippocratic Oath, is a contemporary adaptation of the code established by Hippocrates.
• The $17^{th}$ Century marked the development of modern science, characterized by several major breakthroughs:
  • Johannes Kepler developed the Laws of Planetary Motion.
  • William Harvey discovered the Circulation of Blood.
  • Robert Hooke discovered cells.
  • Isaac Newton formulated the Laws of Motion and Universal Gravitation.
  • René Descartes developed Analytic Geometry.
  • Evangelista Torricelli invented the Barometer and demonstrated atmospheric pressure.

Scientific Methods and Investigation Types

• Scientists do not strictly follow a rigid sequence of steps; instead, they follow patterns known as scientific methods. Depending on the specific needs of an investigation, steps may be added, skipped, or repeated.
• Typical stages of a scientific investigation:
  • Statement of the Problem: Most investigations begin with observing an event in nature. The problem statement typically asks "why" or "how" an event occurred. New questions posed during an investigation can lead to new problem statements.
  • Research and Gathering Information: Scientists investigate existing knowledge regarding a problem. Examining observations and interpretations from reliable sources helps refine the question and ensures it is testable.
  • Planning and Conducting an Investigation: The goal is to find answers to questions about the natural world. There are three primary types of investigations:
    • Descriptive Investigations: These involve collecting data and recording observations without making comparisons.
    • Comparative Investigations: These involve collecting data while manipulating variables to compare results (e.g., measuring and comparing physical properties of organic compounds).
    • Experimental Investigations: These follow processes similar to comparative investigations but include the identification of a control.

Experimental Design, Ethics, and Integrity

• Experimental investigations involve forming and testing a hypothesis. A hypothesis is a tentative, testable statement that must be capable of being supported or not supported by observational evidence.
• A control is used in investigations to test the effect of one variable on another.
• Scientific Ethics:
  • Ethics are a set of moral principles or values that govern decision-making and behavior.
  • Scientists must disclose conflicts of interest, such as ties to companies or funding sources that might influence research or conclusions.
  • Plagiarism—using the ideas or words of others without citation—and the fabrication or manipulation of data are strictly prohibited.
• Reducing Bias:
  • Bias occurs when a scientist’s expectations affect data analysis or conclusions.
  • Bias can be minimized by conducting as many trials as possible and keeping accurate notes of all observations.
  • Blind experiments, where the researcher does not know which experimental group is manipulated until after data analysis, are also used to reduce bias.

Data Analysis, Peer Review, and Scientific Logic

• Data Analysis: This involves recording observations and organizing data into easy-to-read tables and graphs. All results, including unexpected ones, must be included, and all possible scientific explanations must be considered.
• Peer Review: Before scientific information is made public, it must be evaluated by scientists with expertise in the same area of study. Research published in scientific journals is subject to this process to ensure validity and reliability.
• Scientific Theories and Laws:
  • A scientific theory is a highly reliable, well-established explanation of a natural or physical phenomenon, supported by numerous observations and investigations by independent researchers over time.
  • A scientific law is a statement describing what happens in nature that appears to be true at all times.
  • Theories can be used to explain laws (e.g., theories explaining the law of gravity), but theories never become laws.

Limitations of Science and Biblical Integration

• Science can explain many aspects of the world but cannot explain or solve everything. Scientific deductions and inferences must be testable and verified to be valid.
• Relationship between Science and the Bible:
  • The Bible is not a science textbook, but it provides a worldview that encourages the study of nature.
  • Studying the natural world is seen as a way to see beauty in creation and deepen appreciation for God.
  • Biblical references to the natural order:
    • Psalm $19:1-4$: States that the heavens declare the glory of God and the sky proclaims His handiwork.
    • Jeremiah $33:25-26$: References the fixed order of heaven and earth established by God, which provides the consistency necessary for scientific investigation.
    • Proverbs $25:2$: Suggests that while God conceals things, it is the glory of humans (kings) to search them out.
    • Proverbs $6:6-8$: Uses the observation of ants as a source of wisdom regarding preparation and work.
    • Romans $1:20$: Claims that God’s eternal power and divine nature are clearly perceived through the things He has made.
    • Job $38-39$: Highlights the limits of human knowledge through a series of questions posed by God.
    • Proverbs $1:7$: States that the fear of the Lord is the beginning of knowledge.
• Science explains how the world works, while Scripture explains why the world exists and how humans should live; these are viewed as complementary perspectives.

Global Impact and Stewardship

• Societal Advancement:
  • The Green Revolution of the $1950s$ dramatically increased crop yields globally.
  • Materials science has led to improvements in vehicle safety and the development of lithium batteries for renewable energy storage.
  • Advances in medicine, engineering, and technology have increased life expectancy and human flourishing, which aligns with the biblical mandate to care for human life (Genesis $1:28$).
• Stewardship and Ethics:
  • Environmental science aids in understanding ecosystems, climate patterns, and resource management, facilitating sustainability and conservation.
  • Based on Genesis $2:15$, humans are called to work and keep the earth, making science a tool for responsible stewardship to prevent exploitation or neglect.
  • Scientific depth can foster humility and awe, reminding humans of their limitations compared to infinite wisdom.
  • Emerging technologies like AI, genetic engineering, and nuclear energy raise serious ethical questions, emphasizing that knowledge must be paired with wisdom and moral accountability (Proverbs $1:7$).

Science and Engineering Practices

• Science and engineering are essential processes of inquiry and problem-solving. Engineers specifically use math and science to solve problems or meet needs.
• Key Practices:
  • Asking Questions and Defining Problems: Specific, measurable questions drive science and lead to testable ideas. In engineering, criteria (requirements for success) and constraints (limitations like cost, durability, and materials) are used to define problems.
  • Developing and Using Models: Models are representations of ideas or systems. They must include relevant details while acknowledging limitations in scale, size, and properties. They are subject to revision based on new evidence.
  • Planning and Conducting Investigations: These typically follow a cyclical pattern of testing, analysis, modification, and repeated testing to ensure reliability.
  • Analyzing and Interpreting Data: Technological advances, such as digital modeling tools, assist in organizing and interpreting large data sets.
  • Mathematics and Computational Thinking: Scientists utilize algebra, calculus, and statistics. Relationships between variables are often depicted through functions and equations on graphs.
  • Engaging in Argument from Evidence: Scientists must defend claims with evidence using logical reasoning. Peer review allows for the critique of these arguments to ensure accuracy and ethical standards.