Have you seen a cocoon or chrysalis? A cocoon is the mid-stage of the life cycle of a butterfly. The butterfly starts out as an egg then hatches as a caterpillar. After the caterpillar stage, it creates a cocoon to complete a metamorphosis into a butterfly. Likewise, rocks can also be metamorphic. If something "morphs," what does it do? Look up the origin of the word metamorphic at dictionary.com. You will see that the word is derived from "meta" and "morphic."
describe what you learn about the word metamorphic. Also, describe how the term metamorphic as it applies to rocks is similar to the term metamorphosis as it applies to living organisms such as butterflies.