I made ScienceFix.com to share my favorite demos that I do in my middle school science classes.  

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Media that I like...
  • Something Funny Happened on the Way to the Moon
    Something Funny Happened on the Way to the Moon
    by Sara Howard
  • NOVA - Origins
    NOVA - Origins
    starring Neil Degrasse Tyson
  • Human Body: Pushing the Limits
    Human Body: Pushing the Limits
    starring Bray Poor

Entries in demo (81)


Video Demo: Constant Speed Car

Speed is the rate at which an object covers a distance.  How do you know if that rate changes or not?  The video shows how to determine if the speed of an object is constant.


Video Demo: Accelerometer

Velocity is speed in a given direction.  How is a change in velocity (acceleration) detected?  Accelerometers.  Most smartphones have accelerometers to detect changes in velocity to monitor certain tasks.  The video demonstrates a very basic accelerometer and how it works.


Video Demo: Centripetal Force

A simple demonstration of centripetal force. A marble is moving in a circular path. The wall of the roll of tape is applying a force on the marble toward the center of the circular path. That is centripetal force. Once the force is removed, the marble, because it has inertia, moves in a straight line.


Video Demo: Fishing Weight Inertia

The more mass an object has, the more inertia it has.  Inertia is the tendency of an object to resist a change in motion.  There are two fishing weights.  One has more mass than the other.  A string applies an unbalanced force to the different weights.  Which one resists a change in motion?  Watch the video.


Video Demo: Beaker Inertia

Another demo on inertia?  Yup, and this time I have enlisted the help of one of my favorite science guys: Beaker.  Beaker, books, and a rolling chair are moving at constant velocity until an outside unbalanced force is applied.  Watch what happens!

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