The velocity of sound in a material is primarily dependent on what factor?

The velocity of sound in a material is primarily dependent on the intrinsic properties of the material itself, which is referred to as material properties. These properties include factors such as the elastic modulus (stiffness) and the density of the material. The relationship can be expressed by the formula for sound velocity, which reflects how sound travels through the medium based on its ability to transmit mechanical vibrations.

While temperature can influence the properties of a material (for instance, altering its density or elasticity), it is not the primary determinant of sound velocity itself. Similarly, frequency has no effect on the speed of sound in a given medium; it affects only the wavelength of the sound. Density does play a role, but it is not the sole factor, as it is interdependent with elasticity to dictate sound speed. Thus, material properties encompass a broader scope and determine how sound propagates through the material, making it the correct choice.