get something metallic hit it on the table and then put it in a bole.
yes
It makes the sound travel further
Sound does not travel through a slinky. This is just a science experiment to SHOW how soundwaves travel.
underwater x
under water because of the water
Speed has nothing to do with where you are. You can travel below the speed of sound pretty much anywhere.
I cannot imagine what experiment you are referring to because sound ONLY travels through a medium. In space, no sound.
Take a marinator with the hand vacuum pump 1. place your mobile phone inside seal it with the lid. now remove the air inside using the hand pump. Listen to the sound .. Gradually it will decrease.
because sound waves travel at different distances and speeds underwater plus the water is in your ear.
Sound travels through air. Experiment: Listen. Result: Do you hear anything? That sound has traveled through air.
Making some sound (ringing a bell, dropping an object, etc.) inside a vacuum.
Through the vibrations