What is the appearance of crystal methamphetamine?

The appearance of crystal methamphetamine is often described as resembling glass fragments or shiny rocks. This form typically manifests as a crystalline structure that can have a reflective surface, distinct from other forms of methamphetamine, like the powdered version. This visual characteristic not only helps to identify the substance but also contributes to its street name "ice" because of its appearance, which can resemble small shards of ice or glass.

In contrast, the other options provided represent different substances or forms. Methamphetamine can exist as a white powder, but that would not be classified as "crystal." A brown liquid or yellow crystals does not accurately reflect the usual presentation of crystal methamphetamine, making those choices less relevant. It is important for learners to recognize the specific characteristics of substances like crystal meth to enhance understanding and awareness regarding health and safety issues associated with drug use.