A distance-time graph is graph that represents the speed of an object and the velocity of an object is its speed in a particular direction. A velocity-time graph is a graph that represents the acceleration or velocity of an object. A wind-velocity diagram is a diagram that measures wind<span> speed, or </span>wind flow velocity. A HR Diagram (Hertzsprung-Russell Diagram) is<span> a scatter graph of stars showing the relationship between the stars' absolute magnitudes or luminosities versus their spectral classifications or effective temperatures. Hope this helps!</span>
