Scientific Method and Wireless Speaker Review

Vocabulary and key concepts flashcards covering the scientific method, experimental variables, sound energy, and speaker mechanics.

Question (Scientific Method)

The initial step of the scientific method where a specific problem or inquiry is defined to be investigated.

Hypothesis

A proposed, testable prediction or explanation for a scientific phenomenon based on prior knowledge.

Independent Variable

The variable in an experiment that is intentionally changed or manipulated by the investigator.

Dependent Variable

The variable in an experiment that is measured or observed to determine the effect of the independent variable.

Controlled Variables (Constants)

The factors in an experiment that are kept the same throughout all trials to ensure a fair test.

Experimentation

The step in the scientific method where tests and procedures are conducted to test a hypothesis.

Conclusion

The summary and evaluation of experimental results to determine whether the hypothesis is supported or rejected.

Sound

A form of energy produced by vibrations that travels through a medium.

Speaker

A device that converts electrical signals into sound energy through physical vibration.

Energy

The capacity to do work or cause a change in a system.

Transmit / Transmission

The process of passing or transferring energy, signals, or sound waves through a medium or space.

Input

The energy, signal, or information that enters a system.

Output

The energy, signal, or response produced or released by a system.

Frequency

The number of vibrations or wave cycles that occur per unit of time.

Hertz (Hz)

The standard unit of measurement for frequency, where $1\,\text{Hz}$ equals one vibration or cycle per second.

Pitch

How high or low a sound is perceived, determined directly by the frequency of the vibrations.

Relationship between Vibration (Frequency) and Sound (Pitch)

Higher vibration frequency produces a higher-pitched sound, whereas lower vibration frequency produces a lower-pitched sound.