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You've probably played with magnets or seen them on a refrigerator door. But did you know that magnets are used in everything from laptops to electric guitars? Why and how do these magnets work? Throughout the centuries, scientists have wondered about magnetism. Why are some objects always magnetic while others are magnetic for only a short time? How do compasses work? Do migrating animals use magnetism to navigate? When scientists have questions...
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Much of what you experience from the things you see to the sounds you hear travels to you in waves. But how do sound and light waves work? For thousands of years, scientists have been testing hypotheses about waves and learning from the results of observations and experiments. These tests ultimately lead to more questions: How can we see colors? Why can light travel in a vacuum while sound can't? How does the pitch of a sound change as it gets closer...
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You've probably heard lots of things about energy. You may know that your body needs energy or that there's energy in sunlight. But what exactly is energy? Where does it come from and where does it go? How do plants, people, and machines use energy? Scientists have wondered about these things too. They conducted experiments to learn the answers to their questions. How do cells get energy from food? What is nuclear energy? How does a roller coaster...
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"In this engaging title, young readers learn about the moving form of energy that is motion! The relationship of mass and acceleration is explained, as are the forces of downforce, updraft, friction, inertia, centripetal force, and the role of aerodynamics in managing these forces. These properties are illustrated by the running of car races. Colorful infographics make internal combustion, mass and acceleration, and centripetal force easily accessible,...
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In this engaging title, young readers learn how temperature works! Different temperature scales are explained, as is temperature's affect on molecules and different states of matter. These properties are illustrated by the creation, movement, and melting of glaciers. Ice ages and global warming are included, as are their affects on the delicate temperature balance of Earth. Colorful infographics make atoms, atomic structure, how the sun heats Earth,...
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In this engaging title, young readers learn about the form of energy that is sound! Sound waves and their wavelengths are discussed, as are the vibrations of molecules, acoustics, and how the ear interprets sound. These properties are illustrated by the making and hearing of music. Colorful infographics make decibels, amplitude, frequency, and ear anatomy easily accessible, and prominent contributors such as Ludwig van Beethoven are featured. A fun...
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In this engaging title, young readers learn about the different states of matter! Atoms and molecules are explained, as are elements and the periodic table. The three main states of matter solid, liquid, gas are covered, as are the properties of each and the role of energy in their changing from one form to another. These properties are illustrated by the birth and collapse of stars. The rare states of matter plasma and Bose-Einstein condensate are...
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Forces and motion are at work all around you when you kick a ball, ride a bike, or drop a book. But what exactly are forces? And how do they make things move? For thousands of years, scientists have been testing hypotheses about forces and motion and learning from the results of their experiments. These lead to more questions: Why do you speed up when you're biking down a hill? Why are heavier objects harder to pull? Why doesn't the moon float off...
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In this engaging title, young readers learn how visible light is the key to color! Discover how light begins with the sun and travels to Earth on electromagnetic waves, how white light actually holds the whole color spectrum, and how the eye perceives color. These properties are illustrated by the mixing of paints and pixels. Colorful infographics make the electromagnetic spectrum, wavelength, and eye anatomy easily accessible, and prominent contributors...
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You've probably noticed that when water gets really cold, it freezes. And you've probably seen steam coming from a pot of boiling water. But do you know why that happens? Do you know how wood burns or what's inside a fire extinguisher? When scientists have questions like these, they conduct experiments to find the answers. Through countless experiments, scientists have learned about different states of matter: solids, liquids, and gases, and what...
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This book explores different forms of energy, such as gravity, acceleration, velocity, g-forces, and centripetal force, illustrated by the design and operation of roller coasters. It includes infographics about joules and shifting energy and scientists such as LaMarcus Thompson.
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