🔬Methods of Science

Definition: A branch of science rooted in inquiry that seeks to explain events in nature. It is the study of the physical world: energy, matter, and their relationship.
Scope: Involves observation and experimentation. It covers everything from the motion of electrons and rockets to the structure of the universe.
Careers: Physics graduates pursue diverse, interdisciplinary fields such as engineering, medicine, computer science, astronomy, and finance.

A flexible, logical series of steps used to solve a problem or investigate a phenomenon. Steps are often repeated and revisited (iterative).

State the Problem: Begins with an observation and formulating a testable question ("How?" or "Why?").
Gather Information: Researching what is already known.
Form a Hypothesis: Proposing a tentative, testable explanation.
Test the Hypothesis:
- Done through experimentation (testing one variable) or direct observation (e.g., in astronomy).
- Often involves building models (small-scale replicas) to simulate the real world.
Analyze Data: Recording, organizing, and graphing observations.
Draw Conclusions: Determining if the data supports or does not support the hypothesis. If not supported, the hypothesis must be revised or rejected.

Being Objective: Scientists must avoid bias and keep accurate records of all observations.
Communication: Results and data must be shared with others for verification and comparison.
Peer Review: The process where a scientific paper is reviewed by experts (peers) in the field to ensure it is scientifically rigorous and reliable before publication.

Definition: Physical or mathematical representations used to describe phenomena that are too large, too small, or too complex to observe directly (e.g., an atom or weather patterns).
High-Tech Models (Simulations): Computer models are crucial in fields like engineering and pilot training because they are safer and more cost-effective than real-world testing.
Example (Atomic Models):
- Rutherford's Model: Small, dense nucleus with electrons orbiting.
- Electron Cloud Model: Electrons exist in a cloud of probability around the nucleus.

Definition: A tested, well-established explanation for events or phenomena, supported by a large body of evidence from many investigations.
Nature: It is the best current explanation, but it is always subject to refinement or modification if new data emerges. (e.g., the historical theory of gravity).

Definition: A statement that describes what happens in nature under certain conditions (e.g., the law of gravity).
Nature: A law tells you what will happen, but it does not explain why it happens (which is the role of a theory). Laws are generally accepted as true in science.

Science can only address questions that can be tested and verified through experimentation or observation.
It cannot answer questions related to values, morals, opinions, aesthetics, or emotions.