Flashcards
Unit 5.3 Sound Energy
Flashcards do conjunto (20)
- 1Module 5.3 Sound Energy
- 2What is Sound?Sound is a type of energy produced by vibrations.
- 3What happens when you pluck a string on the guitar?You start the string vibrating. The vibrating string pushes on nearby air particles.
- 4What is A Mexican wave?A flow of energy around a stadium.
- 5How is sound produced from your mouth?The folds of your skin making up your vocal cords vibrate when air form the lungs pushes through them.
- 6How is sound produced from a trumpet?The vibrating limbs of a trumpet player make the air inside the trumpet vibrate.
- 7How is a sound produced from a drum?When the skin of a drum is hit.
- 8Explain the kinetic energy in air particles.This kinetic energy in the particle is transferred from air particle to air particle as a sound wave travels.
- 9What is an echo ?An echo is a reflected sound.
- 10What is acoustics?Acoustics is the science of sound
- 11What is the speed that sound travels in?340m/s
- 12How fast does sound travel in gas at 20°C?343m/s
- 13How fast does sound travel in liquid at 25°C?2439m/s
- 14How fast does sound travel in Iron?5130m/s
- 15Why does sound travel faster in a solid?Sound travels faster in a solid than through gas, because the particles in the solid are spaced much more closely.
- 16What is a pitch?Pitch of a sound depends upon how quickly the particles vibrate, the higher the pitch of the sound.
- 17What is frequency?The number of waves that travel past a given point per second is called the frequency.
- 18What is a wavelength?A high-pitched s=ound has a higher frequency than a low deep-pitched sound has a higher frequency than a low, deep pitched-sound.
- 19What is frequency measured in?Hertz (Hz)
- 20What is Loudness measured in?Decibels (dB)