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A sound wave with its characteristic pattern of compressions and rarefactions is shown below. A centimeter ruler is included below the pattern. The wavelength of this sound wave is __~1.7__ cm. The pitch of a sound is directly related to the __frequency__ of the sound wave.
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Sound is the movement of compression waves (longitudinal waves) hitting our ears. These compression waves are alternating high and low pressure areas. The air molecules vibrate back and forth, but don't move. Speakers imitate sounds by pushing air and causing vibrations.
Sound waves are caused by vibrating particles and are an example of a longitudinal wave. Human ears are specially adapted to hear sound waves and we can make use of certain types of sound waves called ultrasound waves in medicine and echolocation technology.
1. Sound waves are longitudinal waves. 2. As the teacher talks, students hear the voice because particles of air move from the mouth of the teacher to the ear of the student. 3. Sound waves are mechanical waves. 4. All sound waves are produced by a vibrating object. 5. A sound wave does not consist of crests and troughs. 6. Mac is talking to Kate.
Sound is a waveform made from vibrating matter. The sound wave travels through matter—especially air—in a straight line. When the wave hits a different material, some of it is reflected, absorbed and transmitted through the material. In the case of a sound wave in air hitting a solid wall, most of the sound is reflected.
Properties of Sound Waves. review / practice. ID: 1524771. Language: English. School subject: Science. Grade/level: 7. Age: 12-13. Main content: Frequency, pitch, wave speed. Other contents: details.
