This resource provides historic information on length measurement in the United Kingdom. Click on the topics on the left toolbar of the article to find out more information.

Explore the relationship between thrust, drag, friction, weight, and acceleration in this interactive simulation and see if you can make the sled stop on a particular rock

Read and understand the differences between a cold and a warm front.

Review the main types of weather fronts using this study guide.

This lab demonstrates Hooke's Law with the use of springs and masses. Students attempt to determine the proportionality constant, or k-value, for a spring. They do this by calculating the change in length of the spring as different...

Humans impact the physical environment in many ways: overpopulation, pollution, burning fossil fuels, and deforestation. Changes like these have triggered climate change, soil erosion, poor air quality, and undrinkable water. These...

Often we find that different phases of pure substances can exist in equilibrium with one another. Let us consider an important gedankenexperiment (Latin-German for "thought experiment") in which we boil water. Ordinary water boiling is...

The ritual grew as ownership of automobiles and then mass production of portable grills and plastic coolers soared. Tailgating before college and professional football games is an American tradition. Temporary tent cities pop up in...

A collection of mechanics activities. Many pertain to Newton's laws of motion. Step-by-step directions provided with illustrations. Great for teacher demos or student projects.

Forces are everywhere. Learn what they are, the characteristics of forces, different kinds of forces, and factors that affect them.

Use this outline to find out about Newton's Laws of Motion. Use the different lesson plans covering the laws of motion to learn more.

A great description of the global scale circulation and heat energy. Discusses a single-cell model, a three-cell model, jet streams and more.

Here is a hands-on experiment that lets you discover how and why gravity works by making your own little parachutes.

Newton's First Law also called the law of inertia is the most important thing to realize about motion. This article offers more information on motion and explains solved problems involving Newton's First Law. Also included is a video...