Science world

Photographs, illustrations, and text describe what radiation is and explain the different types of radiation.

Presents an introduction to the solar system, explaining what it is and how it originated, looking at its sun, planets, and moons, discussing forces in the solar system, and including a related activity.

Examines how sounds are made and heard, what makes each sound different, how sound travel, the speed of sound and the sound barrier, echoes and acoustics, and the sounds of musical instruments.

Looks at the science of light and lasers and examines how light travels, solar eclipses, reflections and refractions, laser light and wavelength, and the use of lasers.

Describes how different forces effect certain objects such as the natural pull of gravity and wind and explains how forces change the way things move.

Presents a study of how energy and heat work together and discusses the energy cycle, potential and kinetic energy, fuels, temperature, insulators and conductors, and making windmills.

Explains why springs act the way they do, based on elementary concepts of physics.

Introduces the force of gravity and discusses its effects and reasons for variations in its strength.