SCIENCE 3RD QUARTER PERIODICAL

• High point of wave

  Crest or peak
• Low point of wave

  Through
• Maximum displacement from reposition

  Amplitude
• Changes the position of an object

  Displacement
• Height of crest or Depth of a through measured

  Amplitude
• Distance between two identical on successive wave

  Wavelength
• Number of crest/throughs that pass a point PER SECOND

  Frequency
• Time taken to generate one complete wave

  Period
• Particle motion is PARALLEL to wave motion 


  Longitudinal wave
• Wave that capable transmitting energy through vacuum

  Electromagnetic waves
• Vector quantity that refers to the straight line

  Displacement
• Refers to how fast an object is moving

  Velocity
• Velocity of an object

  Instantaneous velocity
• Defined as the change in position

  Average velocity
• Defined as the rate of the change of velocity with time 


  Acceleration
• Caused by vibrations/produced by actions or any movement

  Sounds
• Considered as a disturbance that travel through medium

  Vibration
• Particles vibrate back and forth

  Longitudinal wave
• Require a medium in order

  Mechanical wave
• Some sounds that we hear solids

  Solids
• Some sounds that we hear water

  Liquid
• Some sounds we hear such as air

  Gases
• Highness or lowness of sound

  Pitch
• Refers to the subjective perception of STRENGTH OR INTENSITY

  Loudness
• Refers to a more general assessment

  Quality
• Characteristic of sound that distinguished

  Quality or Trimbre
• The Lowest frequency on instrument can produce 


  Fundamental Frequency
• Multiples of the fundamental frequency

  Harmonics
• Air passes through trachea and into larynx or voice box

  The human voice
• Ear organ of hearing 


  The perception of sound
• Three parts of Perception sound

  Outer middle and inner
• Air filled space contain EAR DRUM AND BRIDGE OF OSSICLES

  Middle Ear
• Cone shape piece of skin that is 10 MM wide

  Ear drum or tympanic membrane
• Three smallest bone of the body

  OSSICLES
• 20 to 20,000 hz sounds with frequencies 


  The audible range of human
• Lower than 20hz called


  Infrasounds
• Higher than 20,000hz


  Ultrasounds
• Dutch physicist Christian Hygens light was a wave


  Wave theory
• Electromagnetic waves caused by both electric and magnetic 


  Electromagnetic Theory
• According to him light is that small part of electromagnetic spectrum which effects our vision 


  JAMES CLERK MAXWELL