Discusses the size, distance from the earth, and physical characteristics of the moon. Explains the reasons for the phases of the moon.

Describes the sun and how it provides the light and energy which allow plant and animal life to exist on the earth.

Explains how and why a thunderstorm occurs and gives safety steps to follow when lightning is flashing.

A brief explanation of the fact that sound is vibration, using examples from everyday life and simple experiments.

Describes what might have happened when the earth began billions of years ago.

Explains in simple terms what happens during a solar eclipse.

Explains how to view stars and ways to locate star pictures, known as constellations, throughout the year.

Explains what comets are, how they are formed, and how their unusual orbits bring them into earth's view at predictable intervals, with a special focus on Halley's comet.

Describes the origin and nature of hurricanes and ways of staying safe when threatened by one of these dangerous storms.

Describes the various properties of air and shows how to prove that air takes up space and that there is air dissolved in water.