suspense and shock

Suspense: a scene in a film similar to a classroom, the camera reveals that there is a bomb under the table to the audience but the students are unaware of the bomb being there and we can see that the time of the explosion is at 10:00 and the time is 9:55 so us as the audience are thinking will it blow up or not which leaves an uneasy feeling.

shock: exactly the same scenario but nobody knows that there is a bomb and it destructs which then makes the audience jump.