You can add activity and sound effects to elements in your slides.
To add animation use the slide view and open the animation effects toolbar .
Click the animation effect you want to use.
To view the effect choose the Slide Show on
the menu bar then, click Animation Preview.
PowerPoint allows you to
customize your animation. When you choose the custom effect icon you will get a dialog box
with several options. To preview the option choose one and click Preview.
and open the animation effects toolbar 
. 
