What unusual sound do they hear in the fire?
The loudest sound that we can hear is about 130 decibels.
When a sound wave is reflected, you hear an echo.
Sound is longitudinal waves that you can hear. http://en.wikipedia.org/wiki/Longitudinal_wave
Sound too low in frequency to hear (~<20Hz) is called infrasound. Sound too high infrequency to hear (~>20kHz) is called ultrasound.
What unusual sound do they hear in the fire?
No, actually they are easily frightened. There instinct is to run away if they hear an unusual sound coming from a bush or somewhere else.
they can hear sound in ears
Sound perspective is the way you hear a sound. (Where you hear it coming from)
name three animals unusual sound sources
The loudest sound that we can hear is about 130 decibels.
"Hear" doesn't have an "a" sound at all; it has a long "e" sound.
When a sound wave is reflected, you hear an echo.
you can hear by sound wave and ears
Sound is longitudinal waves that you can hear. http://en.wikipedia.org/wiki/Longitudinal_wave
Check whether your speakers are connected to your default soundcard.
In our ears the sound vibrates and makes the sound