Chapter 11 and12 Tes

Question Answer
all waves can transfer ______ but not _____ energy matter
a wave in which the motion of the medium is parallel to the direction of the wave is called what ind of wave compressional
a wave in which the particles of the medium move at right angles to the direction of the wave is called what kind of wave transverse
any substance through which a wave is transmitted is calle da medium
the number of complete wave cycles per unit time is called frequency
amplitude is related to energy
for the speed of a wave to remain constant, an increase in wavelength requires a corresponding ___ in frequency decrease
a wave with right angles and carries energy is transverse
a wave that is parallel and carries energy compressional (longitudinal)
reflection of a wave occurs when the wave strikes a ___ and ____back barrier bounces
refraction occurs because waves move at different speeds in different mediums
a region in the medium in which molecules are crowded together compression
the maximum displacement of molecules in a medium form their rest position is called amplitude
in a rarefaction, the molecules of the medium are far apart
the ability of an object to vibrate by absorbing energy at its natural frequenct is called resonance
what kind of waves pass through he earth when part of the earths crust breaks seismic
in a standing wave, the points at which the medium doesn't move are called the nodes
sound waves are compressional waves
sound cannot travel through a vacuum
sound travels the best and the fastest through solids
the speed of sound depends on temperature, elastciity,, and density
how does temperature affect the speed of a sound wave higher the temperatyure, the faster
how does elasticity affect the speed o a sound wave higher the elasticity, faster
how does density affect the peed of a sound wave the lower the density the faster
the loudness of a sound depends on intensity or amplitude
the pitch of a sound depends on its frequency
the human perception of intensity in known as loudness
high pitch is produced by sound that have high frequency
sounds with frequencies less than 20Hzare infrasonic
sounds with frequencies above 20,000 Hz are ultrasonic
the change in pitch of a sound caused by motion of either the sound source or review is called the doppler effect
you can hear a sound that is produced out of sight around the corner of a building because of diffraction
finding objects by emitting sound waves and interpreting the reflected sound is known as echolocation
what issued to locate objects under water by the reflection of wound waves sonar

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