Challand, Helen J

Briefly describes the earth's interior, the forces and stresses that sometimes cause the ground to shake, and the effects of such movement.

Examines the characteristics of simple plants that do not have seeds, including algae, fungi, lichen, mosses, and ferns, with a brief look at bacteria.

Gives instructions for a variety of simple experiments that illustrate some basic principles of physics and chemistry.

Presents a variety of experiments involving living organisms, including growing bacterial cultures, calculating the rate of seed germination, regenerating animals, and using urinalysis techniques.

Gives instructions for science projects and experiments involving an ant colony, a chicken brooder, plant grafting, microphotography, water purification, and other topics.

Activities and experiments--such as making charcoal, measuring shadows, and calculating the speed of sound--in the areas of astronomy, weather, and geology.

Describes the major types of forests on Earth, their current status, and the environmental problems they face.

Examines the ecological role of wetlands and discusses how they are formed, what life they support, and how people modify or destroy them.

Discusses what causes volcanoes, where they are likely to occur, and how scientists study them.

A brief introduction to chemistry, discussing atoms, molecules, the periodic chart, chemical changes, and states of a matter. Includes simple experiments.