Mechanical Waves are waves which propagate through a material medium (solid, liquid, or gas) at a wave speed which depends on the elastic and inertial properties of that medium. There are two basic types of wave motion for mechanical waves: longitudinal waves and transverse waves. The animations below demonstrate both types of wave and illustrate the difference between the motion of the wave and the motion of the particles in the medium through which the wave is travelling.
If the temperature of the air is said to be at absolute zero, one might conclude that a. the molecules contain a minimum amount of energy. b. the motion of the molecules is at a maximum. c. the molecules are occupying a large volume. the molecules contain a minimum amount of energy.
The best way to think of dewpoint is that it is the temperature at which dew would form. The closer the air temperature is to the dewpoint, the more humid the air. Low humidity will make the air feel cooler. For example, if the air temperature was 100 degrees, with a dry dewpoint of 25, the heat index would only be 93.