Sound and Vibration Flashcards
Grade 2 · Science · Flashcards
Review key vocabulary about sound, vibrations, pitch, and volume.
Flashcards
- Sound
- Energy created by vibrations that travels as waves through matter
- Vibration
- A fast back-and-forth movement that produces sound
- Sound wave
- The pattern of energy moving outward from a vibrating object
- Volume
- How loud or soft a sound is
- Pitch
- How high or low a sound is
- High pitch
- A sharp, high sound like a whistle or a bird chirping
- Low pitch
- A deep, low sound like a bass drum or tuba
- Echo
- A sound that bounces off a surface and returns to your ears
- Absorb
- To soak up sound — soft materials like carpet absorb sound
- Reflect
- To bounce sound off a hard surface (this creates echoes)
- Vacuum
- A space with no matter; sound cannot travel through a vacuum
- Decibel
- The unit used to measure how loud (volume) a sound is
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