Gina Hagler

Explains the use of soil, the scientific method, and includes experiments testing your knowledge.

Engineers blend logic and precision with imagination, and science and math principles with vision and foresight, to create solutions for some of society's most pressing problems. From information technology to medicine, public transportation to space travel, engineers work to make innovation a reality. This inspiring book explores a variety of branches of engineering, discussing the opportunities available, typical work environments, and educational...

Do UFOs and aliens exist? Many people claim they don't. Many others are convinced that not only do they exist, but that in order to avoid widespread panic, the U.S. government released several reports that intentionally covered up all existing proof. Exciting text, accompanied by spine-tingling full-color images and intriguing sidebars, discusses some of the sightings and abductions that have been reported from around the world since the late 1800s....

How does the temperature of ocean water make a difference in the strength of tropical storms? This question and many others can be answered with the principles of earth science. Supporting the Next Generation Science Standards, this book discusses everyday events to describe earth science principles in action. Each chapter contains a sidebar with information on places such as the Ring of Fire and the role Cepheid variable stars play in calculating...

The civilizations of ancient India had their own different governments. In the Indus Valley Civilization, priest kings were at the head of government. The Maurya Empire boasted a stable, centralized government that allowed the flourishing of trade and culture. That government had weakened by the time of the Gupta Empire, opening the gates to foreign invaders and civil wars. This informative volume charts the changes in leadership in ancient India...

Explains what electricity is and how it is conducted; describes the scientific method; and includes experiments testing different electricity concepts. This series makes the scientific process lots of fun! Clear, step-by-step instructions let readers explore the world of science through well-crafted, hands-on experiments. Colorful photos, lively and informative illustrations, and easy-to-read text make the topics appealing and accessible to young...

War has at some point touched every nation. Beginning with ancient history and following through to the present, this book addresses the question of why war exists, and explains the shapes in which it occurs. It will lead young readers on a journey through time by tracing weapons from the earliest stones and clubs to modern technological military warfare. Along with the evolution of weaponry through the ages, it also goes into the development of protective...

Explains what simple machines are and what they do; describes the scientific method; and includes experiments testing different simple machine concepts. This series makes the scientific process lots of fun! Clear, step-by-step instructions let readers explore the world of science through well-crafted, hands-on experiments. Colorful photos, lively and informative illustrations, and easy-to-read text make the topics appealing and accessible to young...