Sound has a source, and it travels from that source to our ears in the form of waves. Learn how about different types of sound waves, how they are made, and how they work.
STEM Explorations is a fascinating new series of 26 informational texts, for grades 1–2, that takes young readers through the worlds of natural science and man-made inventions. Explore weather, seasons, states of matter, and more. Learn how to measure time and temperature, how halves and quarters can be used to share, and how sound travels. Basic nonfiction text features include: table-of-contents, chapters and sub-headings, image captions, easy-to-follow diagrams with labels, enriched vocabulary with pronunciation guides, fact boxes, callouts, glossarys and index.