Paragraph: (Science-textbook/science-g3-14.txt)
Sent 1: Rough surfaces create more friction than smooth surfaces.
Sent 2: Thats why cars have tires.
Sent 3: Its also why we use rubber mats in areas that might get wet.
Sent 4: In your bathtub, you may even use No-Slip tape.
Sent 5: No-slip is another way of saying the items has a lot of friction.
Sent 6: In Figure 1.9, the blades of the skates are very smooth.
Sent 7: Thats why you cant slide across ice with shoes.
Sent 8: The soles of your shoes are much rougher than skates.
Sent 9: The rougher surface of shoes causes more friction and slows you down.
Sent 10: Heavier objects also have more friction.
Sent 11: A heavy object presses down with more force.
Sent 12: The surfaces are held together more tightly.
Sent 13: This makes the surfaces harder to slide past each other.
Sent 14: Did you ever try to push something heavy across the floor?
Sent 15: Heavy objects are much harder to push than light objects.

Question: In order to slide across ice more easily, would you want something on your feet that had a smooth surface or a rough surface? (false/0)

Rough
Hard surface
A smooth surface
Smooth

Question: Why do heavier objects have more friction? (true/1)

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

Question: What is harder to do when surfaces are held together more tightly? (false/2)

Surfaces harder to slide past each other
Remain still
Slide past each other
Slide

Question: When there is more friction, is it harder or easier to push an object across the floor? (true/3)

Easier
Yes
Harder

Question: Why do heavier objects create more friction? (false/4)

The surfaces are held together more tightly
A heavy object presses down with more force
Press down with more force
Fat

Question: Why do cars have tires? (false/5)

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

Question: Why do we use rubber mats in areas that might get wet? (true/6)

Because, Rough surfaces create more friction than smooth surfaces
Smooth surface
Rough surface creates friction

Question: How does a heavy object have more friction? (false/7)

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

Question: Do ice skates provide much friction? (true/8)

Yes
No, It doesn't

Question: Why are heavy objects harder to push than light objects? (false/9)

They press down more so they don't slide as easy
Smooth surface
Heavier objects also have more friction

Question: Why can't you slide across an ice in your shoes the way you would in skates? (false/10)

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

Question: What property does the surface of a rubber mat have that prevents us from slipping in wet areas? (false/11)

Sticky
Creates friction
Tub
It has a rough surface

Last updated: Mon Apr 16 04:55:33 EDT 2018
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