El magnetismo (Magnetism)
Um þessa rafbók
What are magnets? Why are magnets found inside machines such as televisions, radios, and telephones? What do atoms and the tiny particles that make up atoms—protons, neutrons, and electrons—have to do with magnetism? Magnets provide forces that have the power to push or pull other objects. Easy-to-do experiments help readers explore the central principles of magnetism.
Einkunnir og umsagnir
Um höfundinn
Sally M. Walker has been a children's book writer for over 20 years. Most of her books are nonfiction and present various science topics to young readers. Fossil Fish Found Alive is the story of the hunt for the elusive fish called the coelacanth. Sally also enjoys combining science investigation with historical topics. Her book Secrets of a Civil War Submarine, which won the 2006 Robert F. Sibert Medal, tells about the history, loss, and re-discovery of the first submarine to sink an enemy ship in battle. Written in Bone: Buried Lives of Jamestown and Colonial Maryland takes readers on archaeological expeditions, where the forensic analysis of colonial settlers' bones helps us to understand their lives. Sally especially enjoys writing narrative nonfiction that captures the reader's attention with a true story. She is also the author of 2019 Orbis Pictus Honor Book Champion: The Comeback Tale of the American Chestnut.
