"An activity-based volume that introduces early-level physical science concepts, including energy and motion, different types of forces, and simple machines. Features include a glossary, an additional resource list, and an index"-- Provided by publisher.

Includes index. ( page 64)

What is energy? -- Energy from the sun -- Make a solar collector -- Energy from wind -- Energy from burning -- Make a snake dancer -- Energy from electricity -- It's electric -- Energy from atoms -- What makes it work? -- Forces and motion -- Energy and motion -- Make a spool engine -- The invisible push -- A force for stopping -- Working with friction -- A downward pull -- Balanced forces -- Making work easier -- What are levers? -- Make a lever -- What are inclined planes? -- Make an inclined plane -- What are wedges? -- What are screws? -- What are wheels and axles? -- What are pulleys? -- Make a complex machine -- Identify simple machines.