Who Killed the Flowers?

Summary
In this science lab, students will test artificial urine made from ammonia, vinegar, and food coloring to discover who urinated on some flowers in the school greenhouse.

Objectives
• Students will conduct various tests on known urine samples to identify characteristics of urine.

• Students will identify the owner of an unknown, artificial urine sample.

Suggested Grades
4th Grade
5th Grade
6th Grade

Excerpt
During a criminal investigation, urine can be a source of important information. Urine discovered at a crime scene might provide some useful evidence. Because the chemicals in urine can vary from one individual to another, urine can be unique enough to positively identify a suspect.

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