Knapp, Brian

A simple introduction to light rays, vision, optics and mirrors.

A simple introduction to the concepts involved with force and energy, gravity, levers, balancing, and more.

A simple introduction to various factors involved when substances change form or composition, changes that are reversible or permanent, and the effects of heat, water, acids and more.

A simple introduction to the process of dissolving a substance in some type of solution, the reasons for doing it and the possible usefulness of the resulting new combination.

A simple introduction to microbes, including what they are, how they affect the body, bacteria, fungi, viruses, their roles in disease, and how to stay healthy.

A simple introduction to sound, sound waves, vibrations, and how musical sound is created.

A simple introduction to planet Earth and its moon, the sun and its effects on Earth, plus the other planets in our solar system, comets and asteroids.

A simple introduction to the different states of matter and how it can change from solid to liquid to gas.

A simple introduction to gases, including what they are, how they mix and travel, bubbles, and air pollution.

A simple introduction to the concepts involved in life cycles in both plants and animals.