Stille, Darlene R

Explains the scientific knowledge of electricity from its discovery by the ancient Greeks to how electricity is used and how it makes things work.

Presents a children's story about the humpback whale for early readers, and describes what they look like, where they live, how they care for their young, and other interesting facts.

Presents a children's story about the hammerhead shark for early readers, and describes what they look like, where they live, how they care for their young, and other interesting facts.

Presents a children's story about green sea turtles for early readers, and describes what they look like, where they live, how they care for their young, and other interesting facts.

Presents an introduction to the different states of matter, and discusses the properties of solids, liquids, and gases, and how they are used.

Describes different kinds of energy, the properties of stored and moving energy, sources of energy, and related topics such as pollution.

Briefly describes the way a helicopter operates, different kinds of choppers, what the pilot does, and some of the work for which helicopters are used.

Defines matter and discusses its changing molecular base. Provides information on solids, liquids, and gases and what makes them change.

Explains what foodborne illness are, how they spread, and how they can be prevented.

Examines the advancements made in earthquake prediction and detection and in building safer structures.