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100
How is the intensity of a sound measured?
decibels
100
The part of a sound wave where some particles of matter are pushed together
compression
100
Particles of _____ are not carried along with sound waves
matter
100
What kind of surfaces reflect sound
smooth, hard surfaces
100
What is used to find things underwater?
sonar
200
A disturbance that moves energy from place to place
a wave
200
The loudness or softness of a sound
volume
200
Do sound waves get louder or softer as their energy is used up?
softer
200
What kind of surfaces absorb sound.
Rough, fuzzy surfaces
200
What is used to "see" inside a inside a person's body with out using surgery.
ultrasound
300
Most sounds that we hear travel through _____.
air
300
A sound wave that bounces back toward its source and is heard again
an echo
300
Do sound waves travel in one direction or in all directions away from the source of the sound.
all directions
300
What is the distance from one compression to the next in a sound wave?
wavelength
300
Changes sound waves into electrical pictures seen on a graph.
oscilloscope
400
A vibration that can be heard
Sound
400
How high or low a sound is (not loud or soft, not volume)
Pitch
400
Most of the sounds we hear are one single sound or a blend of several sounds
blend of several sounds
400
A harsh or unwanted sound is a _____.
noise
400
The science of sound
acoustics
500
The quality of sound that distinguishes from other sounds
timbre
500
The number of sound waves that pass a point in one second
frequency
500
Do objects that vibrate quickly have a high or low pitch
high
500
Name the 3 states of matter that sound can travel through.
solid, liquid and gas
500
Musical instruments that are played at the same time pitch and volume still sound different because of their _____.
timbre