geology

Contains information about the history and geography of national monuments and parks and includes related hands-on experiments which are appropriate for children ages eight to twelve.

Describes the formation of the earth during the Precambrian period including the structure of the planet, Pangea, the rock cycle, and the origins of living things.

Presents an introduction to the Ice Age in North America, in simple text with illustrations, describing the geography,environment, and plant and animal life of the time.

Presents an introduction to prehistoric North America, providing information on the Cenozoic Era, describing the land forms, environmental conditions, and creatures who roamed this territory over twenty million years ago.

Examines the various dinosaurs of the Mesozoic period, the evolution of the land forms, and the events that brought them to an end.

Discusses how fossilized remains of plants and animals reveal the characteristics of the prehistoric world.

Discusses the nature, significance, and uses of rocks, how they change over time, and what they reveal about the Earth and its history.

Describes the day-to-day activities of earth scientists, focusing on what they do, what they study, and how to become one.

The Earths remarkable origins are chronicled in this insightful volume, which also examines the prehistoric organisms from bacteria to dinosaurs that populated the planet long before humans arrived.

Together, minerals, rocks, and fossils communicate much about Earths history. Readers are invited to take a closer look at the materials that have, in many ways, facilitated life, and to explore the types and categories of minerals, rocks, and fossils alike.