Description

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Although only a small portion of the electromagnetic spectrum can be seen by the human eye, people depend on the energy from the waves in the electromagnetic spectrum every day. Without it, the world we know could not exist. Whether tuning a radio, sending text messages, or cooking microwave popcorn, people use electromagnetic energy all the time. Scientific instruments use the spectrum to help us study Earth and the universe. This set provides easy-to-understand explanations of the different portions of the spectrum, from radio waves to gamma rays. Readers will learn how we encounter and use them. Through accessible texts, sidebars, and photographs, readers will discover how these physical science topics aren't just subjects to study in school but are an integral part of their daily lives. Features include: Easy-to-understand explanations of a foundational physical science topic. A ton of interesting examples demonstrate how human ingenuity has put scientific knowledge to work. Covers electromagnetic radiation, which is a core idea in the Next Generation Science Standards at both the middle-school and high-school levels.