Around 72 percent of the Earth's surface is found under the oceans. It has always been contributing to the dynamically changing face of the Earth through the tectonic phenomenon occurring at its depths. Such a naturally occurring...

Provides a long list of physics formulas for easy reference.

Presents detailed explanation of how to use the different key functions on a scientific calculator. Each function is accompanied by example problems with the steps for finding the solutions using the calculator. Includes diagram of...

A lengthy list of geometry terms arranged alphabetically. Includes labeled illustrations and definitions for each.

Gives a short history of why many African flags use similar colors and presents images of all of the national flags arranged alphabetically.

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.

Gives the dictionary definitions for a lengthy list of chemistry terms.

Gives the dictionary definitions for a lengthy list of geography terms.

An A-Z glossary of science disciplines.

Gives the dictionary definitions for a lengthy list of geology terms.

A detailed explanation of the different types of forces that can be applied to an object and how to represent them in a free body diagram. Includes examples and some practice problems to try, with solutions provided.

A very detailed discussion of ATP. Looks at its structure, how it works, the reactions that take place that use it or produce it, the phosphocreatine system, glycolysis, the lactic acid cycle, aerobic respiration, the citric acid cycle,...

Explains what is meant by instantaneous velocity and the formula used to calculate it. Provides sample problems with solutions.

The Abyssal Zone lies deep in the ocean in the pelagic layer between 4,000 to 6,000 m or 13,000 to 19,500 ft. Learn about some of the unique life forms that call this zone their home, how they have adapted to the extreme pressure and...

Models how to write a similarity statement about different types of triangles and quadrilaterals.

Explains how to add exponents as well as other aspects of exponents including positive and negative exponents, rational exponents, zero exponents, power of power, and division of exponents. Includes practice problems with answers provided.

A detailed discussion of plate tectonics. Looks at continental drift, types of tectonic plates and plate boundaries, and primary and secondary tectonic plates.

Interspecific competition in an ecosystem is explained, along with the different ways it can manifest itself. Includes examples in different types of biomes.

Explains what surface and subsurface mining are, which ores are suited to each, their main differences, the types of mining within each category, and the advantages and disadvantages of surface and underground mining.

Learn how mutualism benefits the organisms in a symbiotic relationship and what the different types of mutualism are. Provides lots of examples.

Projectile motion is explained here. Includes a discussion of Newton's Second Law of Motion, the formulas used to make different calculations, real-life examples of projectile motion at work, and sample problems with solutions.

Discusses the pros and cons of nuclear energy.

Explains the importance of index fossils for the dating and chronology of events in the fossil and geological records. Discusses uses and examples of index fossils in the Cenozoic, Mesozoic, and Paleozoic Eras.

Tells the story of how Archimedes discovered the Archimedes Principle and his water displacement method for determining the volume and density of an object. Provides an explanation and several examples of how it is done.