power (mechanics)

Describes the development of making things move from the invention of the wheel, to engines, then finally to the present rocket technology.

Simple text and illustrations show how objects can be made easier to pull with a handle or a rope.

Presents simple hands-on experiments that demonstrate what can make pushing easier or more difficult.

Describes the nature of energy, where it comes from, and how it can be used.

Presents basic information about energy in question and answer format.

Presents an introduction to motion, in simple text with illustrations, describing how some things move by being pushed or pulled.

A discussion of mechanical energy, looking at how energy can be transferred from one object to another to make something move, examining the states of mechanical energy, and including demonstrations.

Kids discover incredible power stored inside the tiny atom! The key concept is that huge amounts of energy can be released when the forces that hold the nucleus of an atom together are disturbed. That can happen through fission, the splitting of an atom's nucleus, or fusion, the combining of protons and neutrons from two different atoms. Pioneering scientists Lise Meitner and Marie Curie are introduced, and students learn how their research led to a greater understanding of the atom. Kids also learn that although nuclear energy is a clean, almost inexhaustible energy resource, there are safety issues that must be addressed.

Provides step-by-step illustrated science experiments to help children understand the basic concepts.