air

"Find out what air is, why it's important, and how people can protect it"--Provided by publisher.

Describes the ozone layer, explains how it is broken down, and suggests ways to reduce air pollution.

Shows how to perform magic tricks using air pressure, air resistance, friction, and other principles related to air.

Investigates the properties of air and water through experiments.

Provides information about acid rain, discussing its causes, the threat it poses to human health, forests, water life, crops, and buildings, and what is being done to solve the problem of acid rain.

Describes the different kinds of air pollution and what causes it, and examines smog, acid rain, global warming, ozone layers, and efforts to reduce pollution in the environment.

Discusses the different types of air pollution and how they can be stopped or reduced.

Examines acid rain, its effects on the world, and possible ways of stopping such damage.

Presents various experiments using ping-pong balls with other common objects to understand how air behaves.