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. -From the publisher.

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 book.

Starting with tiny molecules, this book explains the main concepts of sound and furthers understanding through a series of easy-to-do experiments.

An introduction to magnetism that explains what it is, what materials are magnetic, how magnets work, what magnetic poles are, and what the different types of magnets are.

The sun, lightbulbs, and flickering fires all bring light to our world. But have you ever watched light rays moving? Or seen how light rays reflect off objects? Now you can! Explore light 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!...

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...

Audisee® eBooks with Audio combine professional narration and text highlighting to engage reluctant readers! What do jar tops and water-bottle lids have in common? Both of them are screws! Screws are simple machines. They help us to do jobs more easily. But don't take our word for it. Put screws to the test 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...

Audisee® eBooks with Audio combine professional narration and text highlighting to engage reluctant readers! What do hammers, wheelbarrows, and brooms have in common? All of them are levers! Levers are simple machines. They help us to do jobs more easily. But don't take our word for it. Put levers to the test 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...

What do a doorstop, a butter knife, and the front of a boat have in common? All of them are wedges! Wedges are simple machines. They help us to do jobs more easily. But don't take our word for it. Put wedges to the test 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 Do Simple Machines Work? Hands-on experiments, interesting photos, and useful...