Jellyfish, sea anemones, and corals are members of the stinging cnidarian family. Flatworms, roundwo... more

Crustaceans, arachnids, and insects are part of the arthropod family.... more

Snails, oysters, scallops, and octopuses are among the typically shelled, soft-bodied invertebrates ... more

Physical and chemical properties and changes can be used to describe and classify all matter.... more

The periodic table designed by Dmitri Mendeleev provides a wealth of information about the elements ... more

Pressure, buoyancy, surface tension, friction, and viscosity are forces at work in fluids.... more

Atomic (nuclear) energy and technology can be used to produce electricity, power ships, preserve foo... more

Isaac Newton s laws of motion describe inertia; the relationship between force, mass, and accelerati... more

Chemical reactions such as photosynthesis, decomposition, burning, and cellular respiration bring po... more

Acids and bases are compounds with specific properties that are very important to everyday life... more

What can you mix together, take apart, and then put back together again? Mixtures and solutions are ... more

Learn the shocking truth about electricity and magnetism and the relationship between these two powe... more

The transformation of chemical energy that occurs in humans, plants, fuels, batteries, and machines ... more

The structure and behavior of atoms allows them to combine to form the millions of molecules and com... more

Follow the path of water as it moves through its endless cycle of evaporation, condensation, and pre... more

Dig through the layers of facts about the sedimentary rocks that make up 75 percent of the Earth s s... more

Enter the exciting world of fossils. These remains and traces of ancient organisms have led to some ... more

Examine the properties of light energy, and learn about various sources of light, tools that use thi... more

An introduction to potential and kinetic energy, gravity, centripetal and centrifugal force, frictio... more

Warm up to the concept of heat energy with this discussion of its sources, effects, properties, and ... more

Examine the Earth s wealth with this book on the properties and uses of rocks and minerals.... more

Journey back in time to retrace the Earth s history from its early beginnings to present-day life on... more