Presents an introduction to electricity, discussing the principles of currents, conduction, circuits, and voltage, along with instructions for simple experiments that demonstrate these principles.
Presents an introduction to electricity, discussing the principles of currents, conduction, circuits, and voltage, along with instructions for simple experiments that demonstrate these principles.
Introduces deep-sea anglerfish; discusses their physical characteristics, eating habits, and breeding habits; and highlights other fearsome fish, including the viperfish, wolffish, and blobfish.
Introduces different species of sharks and describes where they live in the ocean, what they eat, how they care for their young, and how pollution and hunting have threatened the lives of sharks.
Presents an introduction to light, discussing the principles of refraction, lenses, color, ultraviolet and infrared light, and solar power, along with instructions for simple experiments that demonstr
Presents an introduction to light, discussing the principles of refraction, lenses, color, ultraviolet and infrared light, and solar power, along with instructions for simple experiments that demonstr
