A countdown from twelve to one as a space shuttle awaits liftoff. Readers are invited to find hidden numbers on an illustrated activity page.

Describes the process of how hurricanes can form. Also includes explanations of tropical storms and a storm surge.

Describes the causes and the effects of flooding.

Describes what one would experience in a blizzard, including whiteouts, strong winds, snowdrifts, and wind chills.

Describes many different kinds, uses, and benefits of pulleys. Provides examples of pulleys by showing a flagpole, a crane, an elevator and window blinds.

Describes the different kinds, uses, and benefits of inclined planes and ramps. Includes an activity.

Provides examples to describe levers as simple machines used to lift, push, or move a load. Includes an activity.

Describes many different kinds, uses, and benefits of wheels and axles. Includes information on gears, sprockets, and cranks.

Describes and illustrates the job of a snowplow driver and how a snowplow works.