Which of the following are true about sound waves? Choose all that apply.
a. they are longitudinal waves
b. they are transverse waves
c. the waves' motions happen in the same
direction that the wave travels
d. the waves' motions happen perpendicular to
the direction that the wave travels

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.