Sound Energy Surin Mrs. Giordano 5th grade
What makes sound • The back and forth motion is called a vibration, unless something vibrates, there can be no sound.
HOW SOUND IS PRODUCED Vibrating Air Vibrating Reed Vibrating Surface Vibrating Strings
What is a sound wave? • Sound wave is a vibration that spreads away from a vibrating object. • Compression is part of a sound wave where molecules are crowded together. • Rarefaction is part of a sound wave where molecules are spread apart.
What can sound go through? Sound can go through matter such as liquids, solids, and gases.
What is pitch? • How high or loud a sound is • The pitch on a string is related to its thickness • Higher frequency equals higher pitch and lower frequency equals lower pitch
What is volume? • how loud or soft a sound is • Higher energy equals louder sound and lower energy equals softer sound
Reflection and Absorption • The disappearance of a sound wave into a surface • The bouncing of a sound wave off a surface
What is an echo? • A reflected sound wave • Sound can go through solids faster than gases
What is echolocation? • The form of sonar
What is the Doppler E ff ect? Apparent change in pitch as a source of sound moves toward or away from you The siren is an example of the Doppler effect
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