"Provides an introduction to the some of the national parks found in the United States including Yellowstone National Park, Redwood National Park, and the Grand Canyon National Park."
Explains what the center of the earth is made of and describes what the reader would need to dig to the core, including a special outfit and ship to survive the heat and pressure.
Uses the examples of fighter jets to discuss matter and its properties, including states, atoms and their components, elements, molecules, and compounds.
