Young scholars use water and rubbing alcohol to explain how sweat cools mammals' bodies. They write their findings in a journal. After a lecture/demo, students perform a simple experiment that demonstrates this phenomenae.

In this skin worksheet, 9th graders list the five main functions of the skin. Then they explain why a runner sweats and how many sweat glands there are in the body. Students also describe what occurs when the epidermis is slightly injured.

The subject of this life science reading comprehension worksheet is the excretory system. After examining the provided article, readers respond to a series of questions using evidence found in the text.