Carla Mooney

"For thousands of years, the Great Wall of China has stretched across China's Northern provinces. It winds like a giant, sleeping dragon from the Pacific coast in the east to the Gobi Desert in the west. But it's not the only wall in China. Learn abou the buidling techniques used, the empires who constructed them, and what their pruposes were over the centuries in this informative book. Put your walking shoes on and get ready to explore all the interesting...

Introduces telescopes, discussing the types of telescopes, the civilizations and people who engineered them, and the advances in their construction.

Offers 12 different views on the rise of industry and decline of farming. Each page provides information about what happened during the Industrial Revolution and how it affected different people, along with interesting sidebars, questions to consider, and historical images.

"This book explores academic anxiety and how it affects people both mentally and physically, examining the causes and symptoms of academic anxiety as well as strategies to overcome it. Features include a glossary, online resources, source notes, and an index. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO."--

Explains how electric currents are generated as electrons move from one atom to another, how some materials are good conductors of electricity, and how electric currents travel to devices on electric circuits.

"Throughout history, from the art of camouflage to the science of stealth technology, ways have been developed to hide objects and people. Today, scientists are building an "invisibility cloak" that makes objects and people underneath it seem to disappear"--Provided by publisher.

This volume examines what anxiety disorder is, what causes it, what it is like to live with it, and how or whether it can be treated or cured. Anxiety disorders are a category of mental disorders characterized by feelings of anxiety and fear, where anxiety is a worry about future events and fear is a reaction to current events. These feelings may cause physical symptoms, such as a racing heart and shakiness.