Learners will discover what heat waves are, and how they are connected to global warming, in this two-page earth sciences worksheet. Children will read about how heat waves form, how they impact cities in particular, and how they contribute to the greenhouse effect. They will also learn about some recent heat waves, and how they can stay safe during one, before answering three reading comprehension questions. Designed for fourth and fifth graders, this worksheet helps students make a meaningful connection to the climate they experience and the weather science behind it.