Centripetal Force: Roller Coaster Loops

 "What can we learn about physics from an amusement park ride? This video segment, produced for Teachers' Domain, uses roller coaster footage to demonstrate that what really keeps people pinned to their seats as a roller coaster hurtles through a loop isn't just the seat belts, it's centripetal force. To reinforce this important scientific principle, a physics teacher successfully swings a cup of water around his head without spilling a drop."

 

The Combustion of Wood

"What happens when wood burns? Learn about the chemistry of combustion, as well as the different types of combustion, including the types that are harmful to human health. "

 

Is a Bubble Always Round?

"Is a bubble always round? What do you need to do to create another shape? Can you make a square bubble? See how our Science-U campers did it, then try it yourself with step-by-step instructions and guided scientific questions available in the downloadable handout or at the Science-U website."