explore and have fun. With summer still
several months away, here at Science
Explorers we have been brainstorming
some fun activities to keep us busy
in spite of the cold weather.
Meet the Force
First, let’s introduce you to this force. Friction is a force that keeps something from continuing to move forward. Friction works on gases, liquids, and solids. Have you ever batted a balloon through the air? It doesn't get too far because it collides with air molecules that cause friction with the balloon and slow it down. In the same way, when you are walking through water, your legs and the water create friction, slowing you down. This friction occurs because your body is actually bumping into the water atoms and the balloon is bumping into atoms in the air, which are resisting movement.
Some things make items have less friction or have a lower coefficient of friction. Resistance is when things move through a gas or liquid. When moving through a liquid or gas you are actually bumping into atoms and making them move around you.Ice Skates do a bit of both by melting a layer of water under the blade and creating a slippery layer. When a skater wants to stop they use the edge (or serrated tip) to create friction and bite into the ice.
Force of Friction Activity - Ice Skating Indoors
Before you flood your basement and freeze the water to create an indoor rink, try something much simpler instead!
Ice Skate Options:
Ice Rink Options:
Depending on your house, you may or may not have all of these surfaces. Use what you have at your house, and then see if a friend has any of the others next time you go to their house. See how many combinations you can use to test the force.
Once you choose your “skates” and your “rink,” turn on some music and have some fun discovering where the force of friction is the greatest! Try as many combinations as you can.