In this activity, students learn to analyze video clips and extract data about the velocity of moving objects, reinforcing the concept of average velocity. After mastering the technique of using videos to measure velocity, students can...

Companion website to the PBS documentary on the collision of two ships in 1909 and the reliance on the newly invented telegraph for rescue.

A video and a short quiz on Newton's Third Law of Motion. It breaks down what action and reaction mean, and how mass and acceleration factor into the outcome of a collision.

IIHS is an independent nonprofit public service organization that publishes materials relating to highway safety. Call for materials about safe vehicles, collision losses, etc.

The goal of the activities is for students to understand the basics of engineering associated with safety products. Using a bicycle helmet helps to protect the brain and neck during a crash. In order to do this effectively, helmets must...

Students must predict the pre-collision speed of a ball that has been captured by a ballistic pendulum.

Simulate what scientists see in a bubble chamber by playing "particle pool". You'll set up balls and cause collisions while a video monitor records the ghost paths of each individual ball. You'll also predict patterns that will result...

As with collisions, this interactive physics tutorial shows students how momentum is conserved in explosions.

An excellent site for amateur astronomers, with or without a telescope. Includes some links to information about Jupiter and its satellites and the collision of Comet Shoemaker-Levy 9

An electron traveling through the wires and loads of the external circuit encounters resistance. In this tutorial, the concept of resistance is introduced. For an electron, the journey from terminal to terminal is not a direct route....

An activity to understand how diffusion is a result of random motion and collisions of particles. With the virtual labs, explore how a drop of food coloring into a glass spreads and how perfume diffuses at different temperatures and...

Maria R. D'Orsogna shares why members of a swarm follow simple rules: travel in the same direction as those around you, stay close and avoid collisions.

Scientists used maps and seismic data to produce a computer simulation that accurately shows the creation of the wave that shook the world. In this interactive, examine some of the models and images that reveal details of the tsunami...

This simulation shows conduction of thermal energy within and between solids, based on the kinetic energy of particles, and collisions between neighboring particles.

This simulation shows conduction of thermal energy within and between solids, based on the kinetic energy of particles, and collisions between neighboring particles.

This simulation explores the relationship between the temperature of a gas, the motion of the particles in the gas and the changes in the kinetic energies of particles during collisions.

Review how angular momentum is conserved if there is no external torque applied to a system. Specific scenarios are highlighted: system changing it rotational inertia, orbiting bodies, and rotational collisions.

This site by the Illinois Institute of Technology gives a Lab activity in which students use a variety of toys to discover Newton's second law and momentum conservation. Newton's cradle, skate boards, and a toy motorcycle are incoporated...

This Chem4Kids.com site explores the rate of reactions. Content focuses on forces that change the speed of reactions, and measuring rates.

This site provides a general overview of thermochemistry, the division of chemistry that deals with temperature in chemical reactions. Content explores what heat and cold really are, the heat and energy around you, and a bit about Lord...

This site from the National Aeronautics and Space Administration provides the most popular images at the JPL Comet Shoemaker-Levy home page during the month of July 1994, when the comet was impacting Jupiter.

This site provides a tour through the history of natives and immigrants to the California Gold Rush area, including African American, California Indian, Chinese, and Latino.

Find out about Leonid Kulik, Soviet meteorite expert, who made several expeditions in the 1920's to the site of mass destruction in Siberia possibly caused by a meteorite.

This is the home page of the DELPHI experiment at CERN. It provides links to various parts of the experiment and explains the operation of the detector. The general operation is explained at a basic level, but the physics is much more...