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Scientists are curious. Since ancient times, they have been asking and answering questions about the world around them. Scientists are also very suspicious of the answers they get. They carefully collect evidence and test their answers many times before accepting an idea as correct.
In the simplest terms, physical science is the study of what things are made of and how they change. It combines the studies of both physics and chemistry. Physics is the science of matter, energy, and forces. It includes the study of topics such as motion, light, and electricity and magnetism. Chemistry is the study of the structure and properties of matter, and it especially focuses on how substances change into different substances.
Science textbook for North Carolina 6th graders.
Scientists are curious. Since ancient times, they have been asking and answering questions about the world around them. Scientists are also very suspicious of the answers they get. They carefully collect evidence and test their answers many times before accepting an idea as correct. In this book you will see how scientific knowledge keeps growing and changing as scientists ask new questions and rethink what was known before.
Science is central to daily life. As consumers, we are besieged by new products and processes, not to mention a bewildering variety of warnings about health and safety. As taxpayers, we must vote on issues that directly affect our communities - energy taxes, recycling proposals, and more. A firm grasp of the principles and methods of science will help you make life2s important decisions in a more informed way.
Knowledge of the basic ideas and principles of science is fundamental to cultural literacy. But most books on science are often too obscure or too specialized to do the general reader much good.Science Matters is a rare exception-a science book for the general reader that is informative enough to be a popular textbook for introductory courses in high school and college, and yet well-written enough to appeal to general readers uncomfortable with scientific jargon and complicated mathematics. And now, revised and expanded for the first time in nearly two decades, it is up-to-date, so that readers can enjoy Hazen and Trefil's refreshingly accessible explanations of the most recent developments in science, from particle physics to biotechnology.From the Trade Paperback edition.
Over 100,000 readers have relied on Trefil to gain a better understanding of physics, chemistry, astronomy, earth sciences, and biology. The book focuses on the great ideas in each field while showing readers how core scientific principles connect to their daily lives. The sixth edition emphasizes important themes and relationships, along with new real world connections. Scientific American has been added to the book along with completely updated examples. The presentation also employs a more visual approach that includes new illustrations and visuals. In addition, new problems help readers answer the big questions in science.
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