like with many scientific problems, you have to be careful how you ask the question! What do you mean by 'best'? Fastest? Farthest? Loudest?
I'll assume you meant fastest. The speed of sound depends on both the density and the elasticity of the medium it's travelling through. Sounds travels in waves of compression and rarity, so it's fastest in solids because the molecules are packed together more tightly. Sound is next fastest in liquids, again for the same reason. It's slowest in a gas. And, in a gas, the temperature is particularly important--the faster the molecules are moving from heat, the more sound energy they can transfer to their neighbors.
As far as distance travelled --- again, solids and liquids win. However, ther's an additional factor called 'damping' that depends on the elesticity of the medium the sounds waves are travelling through, also scattering. It ends up that lower-frequency sound waves can travel much longer distances than high frequency sounds....this is how whales can communicate over long distances in the ocean--and how elephants do the same in air. Both do their 'long distance' calling with low frequencies
The mantle of course.....because sound waves travel through liquid like surfaces better than solid rock.
Sound (and vibration) are a wave system of sequential compressions and rarefactions of a material. These waves are mechanical and do need a substance through which to travel. They cannot travel through a vacuum.
Heat in the form of infrared radiation can travel through many mediums, and some better than others. It can also travel through the vacuum of space. The more transparent the medium is to infrared radiation, the better it will travel through it.
a solid spred through a liquid
it is a gas
liquid
liquid
Solid
A liquid
Solid
liquid
Sound waves travel through matter, whether solid, liquid, or gas. They do not travel through vacuum.
The mantle of course.....because sound waves travel through liquid like surfaces better than solid rock.
They travel faster through solids
heat doesnt travel from a solid to a liquid. a solid is heated up and turned into a liquid.
Solid. Because it's more dense.
Only by longitudinal mode