You might be surprised how the way in which your slides change from one to the next can influence the feel of your presentation. A transition that has a dramatic effect—such as the Flip transition—shows a lot of movement and captures the attention of your audience. A transition that is more understated—such as Fade or Reveal—is a more subtle way to keep things flowing smoothly from one slide to the next.
Click the Transitions tab.
In the Transition To This Slide group, click the More button to view the full gallery of transitions.
Click the transition that you want to apply.
Add a sound to the transition, if you’d like.
Built-in sound effects in PowerPoint include sounds like applause, a breeze, ...