Sound Waves
The distance between a point on one cycle of a wave and the same point on the next cycle.
What is wavelength?
A wave in which the medium vibrates at right angles to the direction of the wave.
What is a transverse wave?
Sound waves oscillate parallel or perpendicular to the direction in which the wave travels.
What is a parallel?
A musician has a short and a long recorder. Which recorder plays notes with the lowest pitch?
What is the longer recorder?
Mechanical waves need a ______________ to travel through.
What is a medium.
An indication of how high or low a sound is, which is primarily determined by the frequency of the sound wave
What is pitch?
The process in which an animal uses reflected sounds to locate an object
What is a echolocation?
Sound waves are _______ waves.
What is longitudinal?
In a longitudinal wave, areas where the particles of the medium are pulled farther apart.
What are rarefactions?
A sound that is heard a second time after reflecting
What is an echo
The number of complete cycles in a given time.
What is frequency?
The maximum displacement of the medium from its rest position
What is amplitude?
Which of the following sound waves is used for medical imaging?
a. Sonic waves
b. Infrasonic waves
c. Sonar waves
d. Ultrasound waves
What is ultrasound waves?
A sound wave can not travel through outer space because of the lack of .
What is matter.
Characteristics of good reflectors
What is flat and hard?
A disturbance in matter that transfers energy through the matter
What is a mechanical wave?
A wave in which the vibration of the medium is parallel to the direction the wave travels.
What is a longitudinal wave?
For waves moving at a constant speed, if wavelength is doubled, what happens to the frequency?
What is frequency is halved?
What are compressions?
A pipe vibrates at its natural frequency in the wind
What it is resonance
Any speed that is faster than the speed of sound in the medium of interest.
What is supersonic sound?
A change in sound frequency caused by the motion of the sound source, motion of the listener, or both.
What is the Doppler effect?
? = wavelength x frequency
What is speed?
The more energy a wave has, the greater the ___________.
What is amplitude?
A boat sends a sonar signal to determine the depth of the lake. The signal takes 2 seconds to return. How deep is the lake
1500 m