Adjectives:
- groovy

Nouns:
- children
- music

Explanation:
Adjectives are words that describe or modify nouns. They provide additional information about the noun in the sentence. In this sentence, the adjective is "groovy" as it describes the type of music that the children danced to.

Nouns, on the other hand, are words that represent people, places, things, or ideas. They function as the subject or object of a sentence. In this sentence, the nouns are "children" and "music." "Children" refers to a group of young individuals, while "music" refers to a form of artistic expression that is characterized by rhythm and melody.

By identifying the adjectives and nouns in the sentence, we can better understand the description of the scene. The children are dancing to groovy music, which implies that they are enjoying themselves and moving energetically to the rhythm. The sentence paints a picture of a lively and joyful atmosphere where the children are engaged in a fun activity.

Overall, recognizing the adjectives and nouns in a sentence helps to enhance our understanding of the language and the meaning conveyed by the words. It allows us to analyze the sentence structure and identify key elements that contribute to the overall message or description.