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Chapter 13

Sound

QuestionAnswer
____________________ means that sound waves keep moving through materials to produce sound. Transmission
The distance from a point on a wave to the same point on another wave is the _________________________. wavelength
_______________________ stops sound waves from reflecting or traveling any further. absorption
To find out how loud or soft a sound is, you measure its _________________. amplitude
A wave's bouncing off a surface is called ___________________. reflection
_______________________ is how high or low a sound is. Pitch
When you measure the number or waves that pass in a second, you find the __________________________. frequency
A quick back and forth motion is a ______________________. vibration
What is produced when sound waves bounce off a smooth surface? echo
What unit of measurement is used to measure the loudness of common sounds? decibel
What kind of sound is produced by sound waves with peaks that are very close together? high pitch
What kind of sound is produced by sound waves with peaks that are far apart? low pitch
What kind of sound is produced by sound waves that are very tall? loud
What kind of sound is produced by sound waves that are very short? soft
Name the 2 types of waves. transverse and longitudinal
Which type is used to represent sound? longitudinal
Sound waves cause which part of the ear to vibrate? eardrum
In which part of the ear are vibrations changed to nerve signals? cochlea
Which part of the ear collects sound waves from the air around you? outer ear
What happens to the pitch of a sound when the vibrations speed up? it gets higher
What happens to the pitch of a sound when the vibrations slow down? it gets lower
Which instrument plays at a higher pitch, the violin or the bass? Why? violin - smaller in size, shorter strings, and smaller strings
What types of materials will cause sound waves to be muffled? Why? soft materials - they absorb sound and do not allow it to reflect
What causes sound waves to echo? Why does this happen? hard, smooth surfaces - they are reflected off the surfaces
How is your voice transmitted to others? sound waves
What can you do to make sure someone can hear you if they are far away? (Try to list at least 2 things.) yell louder, move closer to the person, cup your hands around your mouth
Created by: Mrs. Furlong