Rough
Hard surface
A smooth surface
Smooth
In order to slide across ice more easily, would you want something on your feet that had a smooth surface or a rough surface?
A heavy object presses down with more force. The surfaces are held together more tightly, making the surfaces harder to slide past each other
Held down with more force to a surface which holds them together more tightly
Weight has invese relation with friction
Dresser
Why do heavier objects have more friction?
Surfaces harder to slide past each other
Remain still
Slide past each other
Slide
What is harder to do when surfaces are held together more tightly?
Easier
Yes
Harder
When there is more friction, is it harder or easier to push an object across the floor?
The surfaces are held together more tightly
A heavy object presses down with more force
Press down with more force
Fat
Why do heavier objects create more friction?
Because rough surfaces have more friction than smooth ones
Rubber creates friction
To go faster
To create friction and hold them to the road
To make them slippery
Rough surfaces create more friction than smooth surfaces
Beacause, Rough surfaces create more friction than smooth surfaces
Why do cars have tires?
Because, Rough surfaces create more friction than smooth surfaces
Smooth surface
Rough surface creates friction
Why do we use rubber mats in areas that might get wet?
Held more force to a surface which holds them together more tightly
It is heavy so it pushes down with more force
Smooth surface
Heavy objects are much harder to push than light objects
How does a heavy object have more friction?
Yes
No, It doesn't
Do ice skates provide much friction?
They press down more so they don't slide as easy
Smooth surface
Heavier objects also have more friction
Why are heavy objects harder to push than light objects?
The blades of the skates are very smooth
Take up more room
And The soles of your shoes are much rougher than skates
Rougher surface on shoes
Why can't you slide across an ice in your shoes the way you would in skates?
Sticky
Creates friction
Tub
It has a rough surface
What property does the surface of a rubber mat have that prevents us from slipping in wet areas?
Rough surfaces create more friction than smooth surfaces. Thats why cars have tires. Its also why we use rubber mats in areas that might get wet. In your bathtub, you may even use No-Slip tape. No-slip is another way of saying the items has a lot of friction. In Figure 1.9, the blades of the skates are very smooth. Thats why you cant slide across ice with shoes. The soles of your shoes are much rougher than skates. The rougher surface of shoes causes more friction and slows you down. Heavier objects also have more friction. A heavy object presses down with more force. The surfaces are held together more tightly. This makes the surfaces harder to slide past each other. Did you ever try to push something heavy across the floor? Heavy objects are much harder to push than light objects. 