Flashcards
Sound
Cards in this deck (24)
- 1How is sound produced?Sound is produced when something vibrates which means to move back and forth very quick.
- 2What is a transverse wave?A transverse wave is a wave where the vibration is at 90 degrees angles to the direction the wave is travelling.
e.g the energy carried by waves at the beach move back and forth but the actual particles that make up the wave move up and down in a vertical direction. - 3What is longitudinal wave?A longitudinal wave is a wave where the vibration is in the same direction that the wave is travelling.
- 4What are rarefactions?Rarefactions are spread out particles vibrating in an area.
- 5What is a sound wave?A sound wave is vibrating object creating regions of high and low transmition moving through a medium.
- 6What is compression?Compression is closely packed particles vibrating in an area.
- 7How can sound waves be measured?Sound wave can be measured using Decibels.
- 8A fact about sound waves.Did you known that sound waves travel away from the source of a sound?
- 9facts about the speed of sound.sound travels faster though solids than through liquids and faster through liquids than through gases.
- 10facts about the speed of sound.sound travels faster in warmer air than in cooler air because the particles in warmer air move with greater kinetic energy.
- 11fact about sound.soft materials absorb sound and convert it into heat.
e.g sofas
- 12which two animals use sonar to catch prey and find their way around?bats and dolphins are two animals use sonar to catch prey and find their way around.
- 13what is a frequency?a frequency is the number of waves passing a point every second.
- 14what is the unit hertz (Hz) used to measure?the unit hertz (Hz) used to measure frequency.
- 15what is a wavelength?a wavelength is the distance from one peak of a wave to the next.
- 16what is pitch?a pitch is the sensation of a frequency.
- 17facts about pitchs.a high pitched noise is the result of shorter waves moving in and out more quickly and a low pitched noise is the result of fewer,slower waves.
- 18what is ultrasound?ultrasounds are the sounds produced by waves of greater frequency than humans can hear.
- 19facts about hearing.our ability to hear high frequencies of sound reduces as we age.
- 20facts about frequencies.Infrasounds are frequencies blow 20 Hz and ultrasounds are frequencies above 20 KHz or 20 000 Hz.
- 21what is a infrasound?an Infrasound is sound waves with frequencies blow 20 Hz.
- 22facts about frequencies.elephants hear a range of frequencies lower than our own hearing range (infrasound)
- 23if a teacher is yelling at a student who is on the other side of the room what type of waves would the sound travel use?the sound travel would use a longitudinal wave.
- 24facts about frequencies.animal such as dogs and cats can hear sound frequencies that our outside our human range of hearing.
Information
- Description
- Flashcards on Sound, created by salem hamid on 02/08/2016.
- Created by
- salem hamid
- Views
- 4
- Rating