One of the three basic states of matter, this fascinating title provides insight into the properties of gases. Although most gases cannot be seen, smelled, or tasted, they are always present. Readers will discover what gases are, how they react when heated or under pressure, and the gases that make up the atmosphere.
While it may not be as simple as pouring water into a gas tank, water, or at least the hydrogen that makes up water, will one day become a significant source of energy. In this important new book, children will discover not only what hydrogen is, but also how this simple element can create clean energy. Hydrogens past deals with hot air balloons and airships, its present, space shuttles and fuel cells. What fascinating technologies await its future? Other topics include What is energy? the reasons why clean energy is so important the technologies that convert hydrogen to useable energy the obstacles that must be overcome before hydrogen can be a reliable energy source a case study highlighting Icelands plan to switch to a society run on hydrogen What is a hydrogen economy? a timeline that provides dates for historical breakthroughs in energy production
Computers are the focus of this book. A timeline of the invention of the computer provides a clear explanation of how our world has changed since the advent of this important invention.
Always know where you are by using a GPS locator. Includes characteristics, uses, how it works, and future applications.
Explores 12 things to know about wild weather. Includes amazing facts along with information about key problems and solutions.
Learn how to create computer-generated 3D models like the ones used in video games and animated films. Readers will blend their art and technology skills as they learn how to use the program SketchUp. Photos, sidebars, and callouts help readers draw connections between new concepts in this book and other makers-related concepts they may already know. Additional text features and search tools, including a glossary and an index, help students locate information and learn new words.
Learn how to think critically about the design of things you want to make. Readers will learn to analyze the efficiency of their plans, while still feeling encouraged to push forward with new ideas. Photos, sidebars, and callouts help readers draw connections between new concepts in this book and other makers-related concepts they may already know. Additional text features and search tools, including a glossary and an index, help students locate information and learn new words.