What is mu? Emerging scientists explore the coefficient of sliding friction, or mu, and apply its concepts as they complete activities in the interesting lesson. They measure the sliding friction between soles of their own athletic shoes...

The vast majority of hydrocarbons humans use help fuel cars, homes, and provide energy. A comprehensive lesson teaches pupils all about hydrocarbons. From alkanes, alkenes, and alkynes to benzene, classes study the preparation of these...

Lesson 19 in the series of 36 analyzes the element hydrogen and the s-block elements. Through readings, answering questions, and discussion, learners write about and explain their occurrence, physical and chemical properties, and...

Le Chatelier's interest in thermodynamics and building materials such as cement and plaster led to the Le Chatelier Principle in 1884. Activity 13 in a series of 36 extensively explores chemical equilibrium. Learners read about...

Adsorption, not absorption, is when atoms stick to the surface of an object, like water sticking to a grain of sand. An informative lesson delves into adsorption, teaching physical and chemisorption and the factors that affect them....

How have the women's share of the labor force and chosen occupations evolved in the United States over the last century? Using census reports, graphs detailing the gender makeup of the labor force, and analysis of the careers of...

Explore the concept of density within states of matter—gases, liquids, and solids—through a group experiment in which young scientists test objects' texture, color, weight, size, and ability to sink or float.    

Need some activities to go along with your unit? A collection of hands-on activities from PBS offers opportunities to add to your electricity, sound, and force units. The electricity activities revolve around building a...

Why do soybean plants that are planted weeks apart in the spring mature simultaneously in the fall? Four independent activities cover the history of phytochrome research, scientist collaboration, the electromagnetic spectrum, and...

Jets, described in this article, are particle sprays resulting from other particles colliding at high speeds, such as can happen in particle accelerators. "Explain It In 60 Seconds" is an article series that aims to summarize in a few...

Rare particle decays, described here, are events that could lead to insights into the unknown processes of the universe. Scientists hope to learn more about them through research with particle accelerators. "Explain It In 60 Seconds" is...

Virtual particles, described here, are particles that appear and disappear so rapidly they can be detected only by their effect on other particles. "Explain It In 60 Seconds" is an article series that aims to summarize in a few...

Simulations are useful research tools for scientists and save a lot of time and money. Some of the ways they are used are described in this article. "Explain It In 60 Seconds" is an article series that aims to summarize in a few...

The terascale, described in this article, is a subatomic region that requires enormous amounts of energy in order to reach it. Scientists hope to be able to study it with the Large Hadron Collider. "Explain It In 60 Seconds" is an...

Neutrinos, described here, are particles scientists still have a lot to learn about. They are trying to measure their masses. "Explain It In 60 Seconds" is an article series that aims to summarize in a few paragraphs the meaning of...

Cherenkov light is explained here as the light emitted when a charged particle travels through matter faster than light would be able to. This would be slower, however, than the maximum speed of light, which occurs in a vacuum. "Explain...

Superconductors are materials that offer no resistance to electricity passing through them. They have many applications in science, such as in the Large Hadron Collider. "Explain It In 60 Seconds" is an article series that aims to...