Why does emily dickinson capitalize most of the nouns in these lines from her poem "a curious cloud surprised the sky"?

Emily Dickinson capitalizes most of the nouns in her poem because she wants to draw attention to a specific idea.  

Like this, the poem tries to give personification to all nouns, given them human attributes. Writers use personification to understand better the nature and actions in a better way. Because it is easier for us to relate to something that is human, its use cheers us to develop a new perspective.  

the sentence that best describes the tone of the passage from the radio broadcast compared to the passage from the book is b. the radio broadcast has a more surprised tone.

consider the text evidence: in the passage from the book, the description is more matter-of-fact. it is simply describing the things resembling little grey snakes, but there is no urgency in the description. on the other hand, in the passage from the radio broadcast, there is definetely urgency (you can tell from the expression used, "good heavens", which clearly indicates surprise.)