There are many emotions you can trigger in the audience just by your choice of words. Happiness, anger, sadness, nostalgia are just a few. Knowing your purpose for being in front of the group helps you to pick which emotions you want to tap. When your purpose is known, choosing words to get the desired emotional response is much easier.
Here's an example of a simple set of facts that a presenter might convey:
"There have been eleven accidents in the past year at the sharp curve which is two miles north of Cherokee Lake on Route 857. Installation of guard rails, warning signs, and a flashing light will cost approximately $34,000. Even though we have not balanced the budget this year, I feel that we should appropriate money for this project. Thank you."
Here is a little different version that uses emotional appeal to get the message across.
"On July 18th of this year John Cochran was found dead. The radio of his car was still playing when the paramedics got to his overturned vehicle. John's neck was broken. It was snapped when his car flipped over an embankment. No one here knows John Cochran because he did not live here, but he died in our neighborhood. Most of you do know of the hairpin turn on Route857 that has been the scene of eleven accidents this year alone and has injured many friends as well as strangers. We need money to put up guardrails, signs, and a flashing light. I know money is tight, but I hope you see fit to find the funds to remedy this situation before the unknown John Cochran becomes one of your loved ones."
Can you see the difference in these two appeals? The first was simply a set of facts. Facts are important, but they rarely stimulate people to action. The action comes when emotions get attached to believable facts. You can bet the second version of the above story would have the best chance of securing that $34,000.
To create the emotional appeal in the second version of the story, words and phrases were chosen that had emotional power. John Cochran was found dead. The radio of his car was still playing . . . John's neck was broken. It was snapped . . . His car flipped . . . hairpin turn . . . He died in our neighborhood. All these phrases were woven into the original set of facts to create the emotional response of horror about this terribly dangerous turn. (Ref. Wake em Up Business Presentations Pages 129-130)