chapter 11 vocab 9th grade--waves and their parts
DESCRIPTION
This powerpoint presentation is for 9th grade honors Physical Science students. It covers vocabulary words from chapter 11 in the textbook.TRANSCRIPT
VocabChapter 11—Waves
Amplitude
• The greatest distance that particles in a medium move from their normal position when a wave passes
Constructive Interference
• Any interference in which waves combine so the resulting wave is bigger than the original wave
Crest
• The highest point of a transverse wave
Electromagnetic Waves
• Wave caused by a disturbance in electric and magnetic fields—DOES NOT require a medium (Ex: Light)
Destructive Interference
• Any interference in which waves combine so the resulting wave is smaller than the largest of the original waves
Diffraction
• The bending of a wave as it passes an edge/opening
Doppler Effect
• An observed change in the frequency of a wave when the source or observer is moving
Frequency
• The number of vibrations that occur in a 1 second time interval
Interference
• The combination of 2+ waves that exist in the same place at the same time
Longitudinal Wave
• Wave that causes the particles of the medium to vibrate parallel to the wave’s direction.
Medium
• The matter through which a wave travels
Mechanical Wave
• Waves that require a medium
Period
• The time required for one full wavelength to pass a certain point
Reflection
• The bouncing back of a wave as it meets a surface/boundary
Refraction
• The bending of a wave as it passes from one medium to the other.
Standing Wave
• Wave form caused by interference that appears not to move along the medium that shows some regions of no vibration (nodes) and other regions of maximum vibrations (antinodes)
Transverse Wave
• Wave that causes the particles of the medium to vibrate perpendicular to the direction the wave travels.
Trough
• The lowest part of a transverse wave
Wave
• A disturbance that carries energy through matter and space
Wavelength
• The distance between ant 2 successive identical parts of a wave.
Wave Speed
• The speed at which a wave passes through a medium