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National Research Council: Elementary Particle Physics
The Committee on Elementary-Particle Physics, part of the U.S. National Research Council, presents this massive report on particle physics. It's a definitive document. Surprisingly readable, totally detailed. Start with the Table of...
Texas Education Agency
Texas Gateway: Ap Physics: Glossary for Kinematics
This is a glossary of terms and definitions used in AP Physics: Chapter 2: Kinematics.
Texas Education Agency
Texas Gateway: Ap Physics: Uniform Circular Motion and Gravitation: Glossary
This is a glossary of terms and definitions used in Chapter 6: Uniform Circular Motion and Gravitation from the AP Physics online text.
Texas Education Agency
Texas Gateway: Ap Physics: Statics and Torque: Glossary
This is a glossary of terms and definitions used in Chapter 9: Statics and Torque from the AP Physics online text.
CK-12 Foundation
Ck 12: Physical Science: Chemical Properties of Matter
Definition of chemical property and examples of the chemical properties of matter. [Free Registration/Login may be required to access all resource tools.]
CK-12 Foundation
Ck 12: Physical Science: Chemical Properties of Matter
[Free Registration/Login may be required to access all resource tools.] Definition of chemical property and examples of the chemical properties of matter.
CK-12 Foundation
Ck 12: Physical Science: Chemical Change
[Free Registration/Login may be required to access all resource tools.] Definition of chemical change and examples, signs of chemical change and how it can be reversed.
CK-12 Foundation
Ck 12: Fifth Grade Science: Physical Science: Chemical Properties of Matter
A module that provides the definition of chemical property and examples of the chemical properties of matter using explanations, pictures, and review questions.
CK-12 Foundation
Ck 12: Physical Science: States of Matter
[Free Registration/Login may be required to access all resource tools.] Definition of state of matter and the three common states of matter and their differences.
CK-12 Foundation
Ck 12: Physical Science: Mixtures
[Free Registration/Login may be required to access all resource tools.] Definition of mixture and examples, homogeneous and heterogeneous mixtures, types of mixtures and how to separate mixtures.
CK-12 Foundation
Ck 12: Physical Science: Melting
[Free Registration/Login may be required to access all resource tools.] What happens to matter when it melts and the definition of melting point.
CK-12 Foundation
Ck 12: Physical Science: Cellular Respiration Reactions
[Free Registration/Login may be required to access all resource tools.] Definition of cellular respiration and its overall chemical equation. The energy changes that occur during cellular respiration, including in photosynthesis.
CK-12 Foundation
Ck 12: Physical Science: Boiling
A module reviewing over how vaporization occurs and its difference from evaporation. Also, review over the definition of boiling point. Module includes a video, pictures, explanation, and review questions.
CK-12 Foundation
Ck 12: Physical Science: Covalent Bonding
[Free Registration/Login may be required to access all resource tools.] Definition of covalent bond, the compounds and elements they make up, and why they form.
CK-12 Foundation
Ck 12: Third Grade Science: Physical Science: Gravity
[Free Registration/Login may be required to access all resource tools.] Provides the definition of gravity and how it relates to weight.
CK-12 Foundation
Ck 12: Third Grade Science: Physical Science: Forces
[Free Registration/Login may be required to access all resource tools.] This resource gives the definition of force and provides examples. It also describes how forces combine and affect motion.
CK-12 Foundation
Ck 12: Fifth Grade Science: Physical Science: Matter, Mass, and Volume
This learning module discusses the definition of matter and what mass and volume measure. Module includes pictures, videos, and review questions.
University of Colorado
University of Colorado: Physics 2000: Einstein's Legacy: Microwave Ovens
A series of pages describing the theory behind microwave ovens and illustrating the manner in which they cook food. Many interactive sections, highly visible content, and interesting explanations. It's definitely worth a visit!
OpenStax
Open Stax: Work: The Scientific Definition
In the following interactive students will begin to explain how an object must be displaced for a force on it to do work. They will also explain how relative directions of force and displacement determine whether the work done is...
Georgia State University
Georgia State University: Hyper Physics: Holography
A definition and explanation of holography. Explains the process of making holograms and discusses the history and properties of holograms.
Georgia State University
Georgia State University: Hyper Physics: Leptons
This site has a definition and properties of Leptons, the "Basic building blocks of matter." There are links to table of properties and more information.
Encyclopedia of Earth
Encyclopedia of Earth: Physics & Chemistry: Mass
Defines inertial and gravitational mass, their scientific history, formulas used in their calculation, the definition of weight, units used for mass, and mass as perceived in the theory of special relativity.
Encyclopedia of Earth
Encyclopedia of Earth: Physics & Chemistry: Catalysis
Gives definition of catalysis, an explanation of how it works, different kinds of catalysis and examples, substances that impact on the catalytic process, the many applications of catalysis, and a history of catalyst technology.
US Department of Agriculture
Choose My Plate: What Is Physical Activity?
This website provides a brief definition of "physical activity" as well as examples of "moderate physical activities" and "vigorous physical activities."