2630361
Descripción
Mapa Mental por Hannah Walsh, actualizado hace más de 1 año
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Creado por Hannah Walsh
hace más de 9 años
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Sound
- Sound: Is a form of energy.
- Sound requires a medium to travel.
- Sound travels because the vibrations are passed
from molecule to molecule, therefore sound
requires a medium to travel through.
- Examples: Solid, Liquid, Gas
- Examples: Solid, Liquid, Gas
- Sound travels because the vibrations are passed
from molecule to molecule, therefore sound
requires a medium to travel through.
- The Speed of Sound
- The Speed of Sound in air is about 340m/s.
- This can change slightly if the temperature or air pressure changes.
- This can change slightly if the temperature or air pressure changes.
- The Speed of Sound in water is slower than in air.
- Sound Waves travel fastest through
Solids and slowest through Gases.
(The Particles are closer together in a
solid which helps the vibrations travel
faster than a gas, as gas molecules are
spread out).
- The Speed of Sound in air is about 340m/s.
- Reflected Sound (Echo)
- When Sound meets are hard,
flat surface, the sound wave is
reflected back from the
surface.This is what we call an
Echo.
- Echo: Is a Reflected Sound
- When Sound meets are hard,
flat surface, the sound wave is
reflected back from the
surface.This is what we call an
Echo.
- The Human Ear and Loud Sounds
- The scientific name for the
loudness of a sound is the Sound
Intensity Level. Here we call this
Sound Level. Sound Level is
measured in Decibels.
- The scientific name for the
loudness of a sound is the Sound
Intensity Level. Here we call this
Sound Level. Sound Level is
measured in Decibels.
- Ear Protection
- 120 Decibles is the
loudest sound level you
should listen to.
- 120 Decibels will case pain in your
ear and most likely will result in
permanent ear damage.
- Any sound above 70 Decibels can cause
harm to your ear, it is for this reason that
hearing protection is recommended for
loud sounds.
- 120 Decibles is the
loudest sound level you
should listen to.
- Noise and Effects
- Noise: A noise is any unwanted
sound.What one person might
consider noise another person might
not.
- Noise can cause hearing problems.
Three effects of Noise:
- 1)Headaches
2)Nausea
3)Deafness
- 1)Headaches
2)Nausea
3)Deafness
- Three ways to reduce the effects of Noise:
- 1)Ear Protectors
2)Double Glazing
3)Putting noisy
machinery in
insulated rooms.
- 1)Ear Protectors
2)Double Glazing
3)Putting noisy
machinery in
insulated rooms.
- Noise: A noise is any unwanted
sound.What one person might
consider noise another person might
not.
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