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Autor:
Sally M. Walker
¿Qué son los imanes? ¿Por qué se pueden encontrar imanes dentro de máquinas como televisores, radios y teléfonos? ¿Qué tienen que ver los átomos y las partículas diminutas que los conforman—protones, neutrones y electrones—con el magnet
Autor:
Sally M. Walker
'Hits the mark.'—KirkusAn engaging middle-grade nonfiction narrative of the American Indian soldiers who bravely fought in the Civil War from Sibert Award-winning author Sally M. Walker.More than 20,000 American Indians served in the Civil War, yet
Autor:
Sally M. Walker
In 1638, John Lewger made a home in the wilderness of the New World, in a place called Maryland. He named his house St. John's, and for nearly eighty years, it was the center of an ambitious English plan to build a new kind of community on American s
Autor:
Sally M. Walker
Soil can be found almost everywhere on Earth. Sand is a soft soil that is found in deserts. Loam is soil that is great for growing plants. But how are these types of soils different? And how are they made? Explore the amazing world of soil in this bo
Autor:
Sally M. Walker
Minerals are fascinating resources that have a variety of uses. A diamond is a mineral that is sought after for its beauty. Salt is a useful mineral that adds flavor. But do you know what minerals are made of? Or how to identify a mineral? Explore th
Autor:
Sally M. Walker
Rocks can be made of many different minerals. By looking at rocks closely, we can tell where they were formed and what conditions they were created in. How do we know these things? And how do we tell different types of rocks apart? Learn about ways t
Autor:
Sally M. Walker
Fossils give us a window to the past. Water, sediments, and pressure work together over time to preserve the shape of things that lived long ago. Studying these ancient plants and animals tells us more about our own existence. Have you ever searched
Autor:
Roseann Feldmann, Sally M. Walker
What do flagpoles and some window blinds have in common? They use pulleys to perform work! Pulleys are simple machines. They help us to do jobs more easily. But don't take our word for it. Put pulleys to the test with the fun experiments you'll find
Autor:
Douglas W. Owsley, Sally M. Walker
On July 28, 1996, two young men stumbled upon human bones in the shallow water along the shore of the Columbia River near Kennewick, Washington. Was this an unsolved murder? The remnants of some settler's or Native American's unmarked grave? What was
Autor:
Sally M. Walker
People, animals, machines, and wind all make sounds. But have you ever seen how sound waves move? Or made a sound wave bounce? Now you can! Explore sound with the fun experiments you'll find in this book. As part of the Searchlight Books™ collectio