New Releases by Sally M. Walker

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.

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.

Introduces glaciers, including how they were formed, how they move, and their importance to the geography and ecology of the world, and discusses ways that we can reduce the deterioration of the glaciers before it is too late.

Text and pictures describe the Earth''s caves, including their different types, animal life, and how people explore them.

This book introduces young readers to volcanoes—what they are, how they form, and how they affect people.

Describes the life of Mary Anning, who discovered many of the best and most complete fossils in nineteenth-century England, yet received little credit for her work.

An introduction to fossils describes where and how they form, how they are found, and how they help us learn about ancient plants and animals.

Includes bibliographical references (p. 45) and index.

Explains the main concepts of sound and presents easy-to-do experiments to further the reader''s understanding.

Learn about pulleys, what they are, what they do, and how they work.

Learns about the screw, the physics behind it as well as its applications.

What is work? You may think work is doing chores or going to a job, but you do work every time you move something from one place to another. With experiments that demonstrate these fundamental concepts, discover how you work, and how simple machines make doing work easier.

Examines how the Sarcosuchus imperator, the prehistoric crododile, was discovered and how scientists uncovered information about the creature based on fossil evidence.

On February 17, 1864, the H.L. Hunley made history as the first submarine to sink a ship in battle. Soldiers on the shore waited patiently after seeing the submarine’s return signal. But after several days, the ship had failed to return. What had gone wrong? In 1995, after over 130 years of searching, the H.L. Hunley was finally found buried off the coast of South Carolina. Follow author, Sally M. Walker on a fascinating journey through the workings of the famous submarine, its voyages, and the difficult obstacles that were overcome to recover, excavate and conserve the ship.

Describes the life and accomplishments of Bessie Coleman, who overcame racism and poverty to become the first African American woman pilot.

The first African American to break the color barrier in modern major league baseball, Jackie Robinson was one of the greatest players of all time. Forced to put up with angry, hateful fans and players when he joined the Brooklyn Dodgers, Robinson''s strength of character and perseverance allowed him to set the standard for all future players.

Uses everyday examples to illustrate how pulleys function as simple machines.

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

Uses everyday examples to show how wheels and axles function as simple machines.

Looks at inclined planes and wedges and using everyday materials shows how they help make work easier.

The ideal resource for K-8 teachers, school librarians, event coordinators, public and children''s librarians, and after-school program librarians. Arranged day by day from August 1, 2000, through July 31, 2001, it will help teachers plan lessons, arrange bulletin boards, and prepare school calendars.More than 4,000 entries include updated birthday listings of entertainers, athletes, and government officials that are of interest to children, all federal and state holidays, significant dates in American history, state fairs, space exploration milestones -- even dates that toys such as Beanie Babies "TM" and American Girl "TM" dolls were introduced.

Describes the physical characteristics, life cycle, and behavior of sea horse as well as efforts to protect them.

Describes the hydrologic cycle and its importance to life on Earth.

Describes the types of sedimentary rocks, and the processes that lead to their formation.