Final answer:
The types of sound patterns identified in the excerpts are end rhyme in Excerpt 1, alliteration in Excerpt 2, internal rhyme in Excerpt 3, and slant rhyme in Excerpt 4.
Step-by-step explanation:
The student has asked to identify which sound type is contained in each provided excerpt. Here are the identifications based on the types of sound patterns:
Excerpt 1 contains an end rhyme with the words 'dark' and 'park' rhyming at the end of the two lines.
Excerpt 2 displays alliteration with the repetition of the 'h' sound in 'high hills'.
Excerpt 3 features an internal rhyme where the sound within a single line of verse rhymes ('dark' and 'park').
Excerpt 4 demonstrates slant rhyme with 'tool' and 'fool' having similar but not identical sounds, creating a near or imperfect rhyme.
Rhyme schemes and patterns such as end rhyme, alliteration, internal rhyme, and slant rhyme are essential in poetry as they contribute to the rhythm and overall aesthetic of the poem.