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 for fossils? Unearth some in this book.

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 to research rocks and what they can teach us about our world.

The worst maritime disaster in American history wasn't the Titanic. It was the steamboat Sultana on the Mississippi River and it could have been prevented.

Discusses the processes used by scientists to discern the identity of the Kennewick Man and what this nine thousand-year-old skeleton revealed about the arrival of humans in North America.

In the time when witches tiptoe about to have their Halloween fun, ancient Druscilla knows her creaking knees will prevent her from being sneaky and sets out to find a silent conveyance for herself, her cat, and her jack-o-lantern.

Describes the 1938 discovery of the coelacanth, a fish previously believed to be extinct, and subsequent research about it.

Audisee® eBooks with Audio combine professional narration and text highlighting to engage reluctant readers! 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™ collection, this series sheds light on a key science question―How Does Energy Work? Hands-on experiments,...

The sun, furnaces, and ovens all make heat. But have you ever watched matter expand when it is heated? Or seen how different kinds of matter conduct heat? Now you can! Explore heat with the fun experiments you'll find in this book. As part of the Searchlight Books™ collection, this series sheds light on a key science question―How Does Energy Work? Hands-on experiments, interesting photos, and useful diagrams will help you find the answer!

"It is November 13, 1909, and the coal miners of Cherry, Illinois, head to work with lunch pails in hand, just like any other day. By seven a.m., 484 of these men are underground, starting jobs that range from taking care of the mules that haul coal to operating cages that raise and lower workers and coal to chiseling out rocks and coal from the tunnels of the mine. With the electrical system broken, they're guided by kerosene torches--and come early...

Where does electricity come from? How does it make a computer run or a light bulb shine? Electricity is a form of energy that can be used in many ways. Starting with the tiny particles that make up atoms—electrons, protons, and neutrons—this book highlights the basics of how electricity works and furthers understanding through a series of easy-to-do experiments.