Science 3rd Periodical Exam
Cards (45)
- Wave: vibration in space and time
- Medium: contains a substance through which a disturbance can travel
- Electromagnetic: relationship between electricity and magnetism
- Mechanical waves: do not meed a medium to transfer energy,produced from the movement of electrically charged particles
- Electromagnetic Spectrum: shows all the types of waves with full range of wavelengths and frequencies
- Wave pulse: simple disturbance
- Wave train: series of disturbances
- wave motion: motion of waves caused by a disturbance
- longitudinal: parallel
- transverse: perpendicular
- transverse and longitudinal: two types of waves
- compression: coils are closer together
- expansions: areas where coils are far apart
- reflection: bouncing of waves
- refraction: bending of waves
- incident:falls/strikes on something
- diffraction:the moment waves hit an obstacle, they bend.
- interference: behavior of the waves
- principle of superposition: describe how waves look when they combine
- crest: highest part of a wave
- trough: lowest point of a wave
- amplitude:maximum distance of a point
- wavelength:distance from the highest peak of a wave to the next highest peak
- frequency:one entire cycle of oscillation
- period: time it takes to complete one cycle
- one hertz:one cycle per second
- longitudinal:vibrations or particles when sound waves are travelling
- compression region: certain small spaces, high-pressure area
- rarefraction: bigger space
- Acoustics: studies the properties and transmission of sound
- pitch
- loudness
- quality : three principal characteristics of sound
- tones: common ways to describe sound you hear
- pitch:loudness and softness of a tone
- intensity: the amount of sound energy that a wave produces
- loudness: physical sensation
- decibel scale: used to measure sound quality
- tone quality/ timbre: refers to the sound quality
- fundamental frequency: lowest frequency
- overtones:higher than fundamental
- 0-30: quiet