Introduces the ocean that lies between Australia and Asia, and provides instructions for an activity to demonstrate how to remove the salt from salt water.
Introduces the long, curving ocean that covers approximately one fifth of the earth's surface, and provides instructions for an activity to demonstrate evaporation of salt water.
Introduces the southernmost ocean, discussing its location, depth, temperature, and surrounding climate, and provides an activity for measuring the temperature of ice.
Describes how and why landslides happen, discusses the damage they cause, explains ways to avoid and survive them, and looks at some of history's worst landslides.
Explains why droughts occur, describes the damage they cause and the difficulty in predicting them, and looks at some of the worst droughts in history.
Explains why avalanches occur, describes the damage they cause, looks at efforts to predict the disasters, and discusses some of the worst avalanches in history.
A brief introduction to Lake Huron that discusses how the lake was formed, its early people, important industries, pollution, and how it is used today.
