Explanation: As the sentence uses words such as “boomed” and “swished “ to describe the thunder and trees. Onomatopoeia is a sound device used to describe an object or an event.
this is onomatopoeia because this is a figure of speech in which words evoke the actual sound of the thing the refer to or describe ex: the boom of the firework exploding
Here using symbols demonstrates your feelings, and so the reader/viewer/listener and understand the topic more clearly and their reactions will be more likely as you think