Why hens don't break the eggs they sit on! The secret to hens being able to sit on their eggs without cracking them has to do with their dome-shaped ends. A dome is a three-dimensional arch, … [Read more...]
Film Canister Rockets
https://youtu.be/77nSpa0gnwQ https://youtu.be/mWub8U9C9r0 How to Make a Film Canister Rocket WEAR SAFETY GLASSES. Why the film canister flies upward. … [Read more...]
Rotation: Paper Helicopter
Things that rotate turn around a center point. Rotate means to turn around a fixed center point or axis; Two dimensional objects, such as the CD shown, rotate around a stationary center point; … [Read more...]
What is Surface Tension?
Surface Tension is Due to Cohesive Forces A cohesive force is the attractive forces between similar particles. Liquid molecules have a tendency not to separate because of cohesive forces between. … [Read more...]