Rub... Rub... Rub... Have the right to you feel the heat? Yes? It's friction! In this episode of ScienceXplosion, Eric learns just how friction create heat and also can sluggish down moving objects. It's no magic, it's science!

Imagine your people without any kind of friction. Friend sit ~ above a chair and also you slide appropriate off. You shot to stand up and your feet cannot grip the floor to push yourself up. Or, girlfriend pedal your bike and the wheels spin wildly, however the bike walk nowhere due to the fact that the tires will certainly not tight the ground to pull you forward.

You are watching: When you rub your hands together, you

Friction is the pressure that resists movement – the slows under or altogether stop motion. Friction is resulted in when 2 objects rub against each other.

### Try this!

What happens as soon as you obstacle your hand together? notice the heat it produces? That’s brought about by friction!

### WHAT execute YOU NEED?

A ramp - you can make your very own from various objects in her home, such together a piece of wood, cardboard, a cookie sheet, a item of plastic eavestrough or other level object.Objects with different textures and surfaces - such as sandpaper, aluminum foil, carpet, paper, synthetic turf or grass, soil, linoleum, corduroy, flannelA toy - such together a toy car, train or van or a plastic domino that have the right to fit top top the rampWriting materials - piece of record and pencil

### WHAT perform YOU DO?

You will certainly be putting the materials on the ramp and observe her toy going down the ramp. But first, you need to prepare a paper of paper for her observations!

Take a paper of paper and attract three columns. In ~ the optimal of each pillar write “Object”, “What ns think will happen,” and “What ns saw.”On her sheet, attract a line throughout the page.

In the first column, compose down the object you are using. In the second column, compose down what you think is going come happen. This is referred to as your prediction. Now check this by put the object on the ramp and your toy (domino) in ~ the peak of the ramp. Let go of the toy to check out what happens. Execute NOT push the toy!

Record your monitorings on your chart. How do your observations compare to your predictions?When you’ve done all her tests, to compare your monitorings of different materials. What can you conclude about the properties of materials?

### WHAT"S NEXT?

Set up a test making use of ramps of various lengths and also the same type of surface ar to see how the length of the ramp influence the motion of the object.Set increase a test making use of the same ramp increased to various heights and the same form of surface ar to see just how the height of the ramp affects the movement of the object.Try testing toys of different weights ~ above the ramp. Exactly how does the weight of one object influence its motion?

### WHAT’S THE POINT?

Friction is an important factor to think about when designing any tool or machine that has mobile parts. Too lot friction deserve to prevent a an equipment from working properly. Also, the heat developed by friction (remember once you rubbed her hands) can cause some parts to breakdown faster. Engineers have devised countless ways to confront these problems, very often by making use of a fluid lubricant such together oil, or even water to make sure components slide there is no too lot resistance.

On the other side, not enough friction can likewise be a problem, i beg your pardon is the instance for winter tires ~ above a car: the tires should be engineered to offer sufficient friction for the automobile to stay on the road in every sorts of really slippery weather conditions!

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