learning about reflection and absorbation of sound

what happens when sound get absorbed?

• the sound energy and volume increase

• the sound energy and volume decrease

• it makes an echo

if i hit a sponge sound will be

• reflected

• absorbed

if i hit a table made of steel the sound will be

• reflected

• absorbed

if sound bounce back from a hard surface its called

• reflection

• absorption

when sound gets reflected it forms a ____________

• sandwich

• echo

• reflection

• all of the above

what cause soundproofing

• sound bieng absorbed by air pockets

• an echo

• none of the above

vacuum helps in soundproofing

• true

• false

an echo is caused when sound bounce off an soft surface such as foam

• true

• false