How important is momentum? Pupils investigate and apply the definition of momentum as they conduct analyses during a series of one-dimensional collisions. They infer the relative masses of two objects by carefully staging and predicting...

Do you want to hear a joke about nitrogen and oxygen? NO. We all know there is oxygen in the air and that plants produce oxygen, but how was it discovered? Scholars read a handout, answer questions, and analyze material in the...

Name is Bond, covalent bond. Through readings and answering questions, classes explore the different types of chemical bonds, their characteristics, valence shell electron pair repulsion theory, and atomic orbitals. 

Is a person's sexual orientation determined at birth? With the informative website, scholars prepare for a debate about the topic. They learn the top pro and con arguments and read through a historical timeline of homosexuality. They...

Albert Einstein publishes his special theory of relativity and his theory on the quantum nature of light, which he identified as both a particle and a wave. With ever new appliances, electricity begins to transform everyday life.

Explains what is meant by the Theory of Continental Drift, its earliest proponents, the stages of continental drift, the causes related to tectonic plate movement, the evidence that has been found, and how the Himalaya Mountains offer...

A very detailed look at gravitational force and the many theories that have been put forward to try to explain it. Includes lots of illustrations.

Extensive discussion of "qualia," the sense-data that inform perception. Considers the different meanings of the term and relates them to epistemological questions about mental states, theories of representation, and introspection....

Provides a long list of physics formulas for easy reference.

This site about Albert Einstein examines many of his theories. It also includes a list of Einstein quotes and references.

A decent explanation of the concept of time as the fourth dimension. The author discusses Einstein's theory of special relativity and the idea of space-time.

The life and many accomplishments of Albert Einstein are detailed in this article. Includes descriptions of his scientific theories and contributions.

Read about the life and work of Albert Einstein, including details from his childhood and what he said about life just before he died.

Describes the refrigerator invented by Einstein and many of his discoveries in physics.

Mathematics and Science often go together in physics and other studies. This site explores a physicist who utilized both fields to advance the ideas of relativity and other concepts.

Instructional module focusing on the development of plate tectonic theory. Discussion includes the evidence of Pangaea, and the processes of seafloor topography and seafloor spreading. Site also includes an interactive practice quiz and...

This site from ScienceWorld gives a brief description of Brownian motion. It also goes on with a detailed series of formula derivations utilizing calculus. Links to related topics and definitions are given.

A detailed discussion of the nature of light, how it can travel through a vacuum, and how the speed of light is affected when light travels through a medium.

In this Spanish-language entry, grasp a concrete understanding of a complicated man whose discoveries impacted society more than any other scientist. This site chronicles the life and accomplishments of Albert Einstein. It also studies...

Explains what the ecological systems theory is and it relates to child development. Looks at five environmental contexts that impact on a child's life and development. Provides examples of how different events within these frameworks...

Discusses the history of the discovery and study of electromagnetism, the scientists who worked on it, the basic principle, how wavelength and frequency are related, and types of electromagnetic waves.

A concise biography of Darwin, including his travels and his published works. Includes links to online copies of selected publications, along with information on related subjects.