Physicists sometimes study matter under extreme conditions. For example, think of the emptiness of interstellar space vs. the unimaginable crush of pressure at the center of a neutron star, or an object dipped in liquid nitrogen vs. the...

This guide focuses on everyday substances and how we can change their properties by adding heat or cold, physically manipulating them, or mixing them together.

In this interactive lesson, learn what the "physical properties" of matter are and how can they be measured and observed.

The Royal Swedish Academy of Sciences has decided to award the Nobel Prize in Physics 2016 with one-half to David J. Thouless of University of Washington and the other half to both F. Duncan M. Haldane of Princeton University and J....

What's the Matter? is a guided inquiry lesson on classification of matter, physical and chemical properties, and physical and chemical changes. There are two parts to this lesson: (a) concentration game for definitions and (b)...

Students will explore matter that sinks or floats when submerged in water and that matter is categorized as either a sinker or a floater. Students will work actively in small, cooperative learning groups as well as gather in a whole...

A good explanation of basic quantum theory.

Physics students find out how to effectively define and clarify kinetic and potential energy.

Students will understand the concept of the ray model of light and how light interacts with matter and reflections.

The life and philosophical treatises of Aristotle (384-322 BCE) are surveyed, including his writings on biology, zoology and physics.

These notes and illustrations will help you understand the concept and properties of acceleration.

This study information helps students apply Newton's third law and understand forces.

Students learn about capacitors and inductors and their role in electrical circuits.

This article helps students understand and apply Newton's third law and the conservation of momentum.

This article helps students understand the concepts of electricity and circuits.

This article helps students learn about Newton's laws of motion and the properties of force.

With this article, students can learn about and understand the concept of wave motion.

Read this article to help understand and describe Einstein's general theory of relativity.

Students can use this article to learn about forces and motions in three dimensions.

Students learn about the fields of force and gravity in this illustrated article.

Students learn about the conservation of energy, aspects that affect energy in a system such as pressure and temperature, and to gain a better understanding of concepts such as entropy.

Learn more about the properties of velocity, acceleration, and force vectors in this illustrated article.

To understand how bounded waves behave and how reflection of waves affects the wave components.

Students learn about uniform and non-uniform circular motion in this illustrated article.