What type of speech tends to sound monotone and flat?

A memorized speech tends to sound monotone and flat primarily because the speaker focuses on delivering the content as it was rehearsed, often at the expense of emotional engagement and natural variation in tone. When speakers rely heavily on memorization, they may restrict their ability to express emotions and respond to the audience's reactions. This can lead to a delivery that feels robotic or lacking in enthusiasm, making it difficult for listeners to connect with the message being conveyed.

In contrast, other types of speeches typically involve more interaction and spontaneity, allowing for greater expressiveness. For instance, an extemporaneous speech, which is prepared in advance but delivered with the aid of notes, allows for more flexibility and natural variation, while impromptu speeches require immediate thinking that often brings energy and dynamism. Informative speeches, while structured, also aim to engage the audience with clear delivery, often incorporating elements that enhance the emotional resonance of the information shared.