Sound Vibrations And Waves Flashcards
what is sound
a form of energy
when are sounds made
when things vibrate
how are vibrations passed on
by particles
what does sound need to have to pass on vibrations
a substance it can travel through solid, liquids and gasses
what cant sound pass through
a vacuum
when is the speed of sound faster
through materials that particles that are closer together
how does speed travel faster
closer particles hit each other more easily so the energy is more likely to passed on from one particle to the next
what is it when sound energy is transferred
when sound energy moves from one place to another
in what direction does sound travel in
travels in all directions because the particles move in all directions unless something stops them
what is the frequency of a sound wave
the number of waves passing a point each second
what is the unit of frequency
hertz ( Hz )
the source of sound vibrates at the same speed as …
same number of cycles per second as the frequency of the wave it make
what do sounds with high frequency produce
sounds with a high pitch
what is the wavelength
the distance between two identical points on neighbouring waves
what equipment can be used to see waves
oscilloscope
what is the amplitude
half the height of the wave
what does the loudness or intensity depend on
the amplitude of the wave
what do louder notes have
more energy and waves with bigger amplitudes
