Sounds travel best through ..........

Sounds cannot travel in a vacuum so there is no sound in space.

We hear an echo when sound is .........

Sound is reflected by .......

Sound is absorbed by .......

Which one of these materials would be best at blocking noises?

Foam is good a blocking sound because it is soft and it has air pockets in it which trap the sound waves.

Why are big rooms like cinemas covered in soft fabric?

Some animals use sound reflection to know their location.

Sound travels best through solids because the particles (molecules) of a solid are close to each other.

Sound does not travel through a vacuum because sound needs particles to vibrate in order to travel.