Final answer:
The words 'horrible heat' and 'refreshing rain' from the student's poem are examples of alliteration, which is the repetition of the same consonant sound at the start of adjacent or closely connected words.
Step-by-step explanation:
The terms horrible heat and refreshing rain in the poem provided by the student are examples of alliteration. Alliteration is a literary device where consecutive words begin with the same consonant sound.
In the example of 'horrible heat', the 'h' sound is repeated at the beginning of both words, creating a rhythmic effect. Similarly, in 'refreshing rain', the 'r' sound is echoed, linking the words together through sound and enhancing the poem's overall flow and auditory appeal.
Alliteration can be found in various types of texts to create musicality or to emphasize certain words or themes. It is a common feature in poetry and prose alike, employed by authors to engage the reader's auditory senses and to add a layer of depth to their writing.