Velocity of sound in solid is more than that in liquid. why?

If you touch a hot light bulb and get burned, that is an example of a. radiation b. convection c. conduction

Ten students stand in a circle and are told to make a transverse wave. what best describes the motion of the students? each student bumps the shoulder of his or her neighbor. at the exact time, all students take a step to the right. the students skip clockwise, going in a circular motion. one at a time, each student lifts his or her hands up and then down.

When an object is heated it contracts. a. true b. false