Ducksters
Ducksters: Physics for Kids: Friction
Kids learn about the science behind friction including how it works as a force to slow things down, how it helps us stand, preventing friction, types, and fun facts.
University of Virginia
Uva: The Real World Air Resistance
A contrast of Galileo and Aristotle's view of inertia and motion. Describes air resistance force and how its reality seems to initially support Aristotle's view.
Oklahoma Mesonet
University of Oklahoma: High and Low Pressure
This University of Oklahoma meteorology tutorial explores both high and low pressure systems--how they form and the different forms they take.
Exploratorium
Exploratorium: The Science of Sports Cycling
A detailed look at the aerodynamic principles associated with cycling. Good science and even better web page design. Includes an online calculator that allows the user to calculate the aerodynamic drag and propulsive power of a bicyclist...
Incorporated Research Institutions for Seismology
Iris: Earthquake Machine: Basic One Block & Simple Graph Animated
Animation of the single-block "Earthquake Machine" model shows how "Forces, Faults, and Friction" interact. [0:16]