elastic force
Storyboard Text
- Why are my shoelaces so stretchy?
- That is because of elastic force!
- What is elastic force?
- Elastic force is when an object can snap back to its original shape.
- Elasticity is when an object has the ability to return to its original state after deformation. In this case, if you stretch a shoe lace and let go, it snaps back.
- I’m lost, I wish I had a compass.
- Lucky for you I have just the thing!
- Elasticity is when an object has the ability to return to its original state after deformation. In this case, if you stretch a shoe lace and let go, it snaps back.
- Great, how do I use this?
- The needle is made out of metal which is attracted to the north pole of the Earth. You can use this to find your way home!
- Magnetic force is the attraction and repulsion between electrically charged particles. In this case the south pole of the compass needle is attracted to the north pole of the Earth.
- Magnetic force is the attraction and repulsion between electrically charged particles. In this case the south pole of the compass needle is attracted to the north pole of the Earth.
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