Sound

1. Sound

2. Decibel: a unit for measuring
the loudness of sounds.

3. Amplify: to make a sound
louder

4. Frequency: the speed at
which something vibrates.
High-frequency vibrations are
rapid vibrations.

5. Hertz: the unit of frequency
equal to one vibration per
second.

6. Inner, Middle, Outer Ear

7. Oscilloscope: an instrument
used to measure the
frequencies of sounds.

8. Pitch: how high or low a
sound is

9. Sound receiver: something
that detects sound.

10. Sound source: an object or
material that vibrates in a way
that makes sound.

11. Tension: the degree to which
a material has been stretched.

12. Tune: to adjust the musical
pitch.

13. Vibration: a rapid back-and-
forth movement.