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- 1. Multiple ChoiceHow does friction affect speed?more friction decreases speedmore friction increases speedless friction decreases speedless friction doesn't affect speed
- 2. Multiple ChoiceFriction is a force that acts in an ___________ direction of movement.similaroppositeparallelwest
- 3. Multiple ChoiceWhich of the following is an example of friction that is helpful?Brakes used on a bikeTires from a car on the roadTread on the bottom of your shoesAll are examples that are helpful
- 4. Multiple ChoiceWhich of the following is an example of friction that is harmful?Pencil marking on paperEngine parts wearing outsand placed on ice in the winterUsing an eraser to erase marks
- 5. Multiple Choice
Which would NOT be a way of reducing friction?making the surfaces smootherusing lubricants such as waxes, oils, or greasechanging from sliding friction to rolling friction using ball bearingsUsing kitty litter on snow and ice to help your car gain traction - 6. Multiple ChoiceWhat does friction produce?lightsoundheatgravity
- 7. Multiple ChoiceWhat is the unit called that measures force?weightmeterNewtonkilogram
- 8. Multiple ChoiceFriction is a force that acts in an ___________ direction of movement.similaroppositeparallelwest
- 9. Multiple ChoiceRougher surfaces have ...greater frictionless frictionthe same level of friction
- 10. Multiple ChoiceHow do you lower the friction force?By a smooth surfaceBy a rough surfaceBy not pushing hardBy pushing down
- 11. Multiple ChoiceWhat is the bowling alley lane coated with to reduce friction?oilwoodpaintsand
- 12. Multiple ChoiceWhat part of a car increases friction?color of painttiresamount of gasskill of driver
- 13. Multiple Choice
The direction of force of friction is always _____ to the direction of motion
same
opposite
unchanged
none of these
- 14. Multiple Choice
Without friction, an object in motion would never stop.
true
false
- 15. Multiple Choice
Which of these materials do you predict would have the MOST amount of friction?
metal
tile
sand paper
denim
- 16. Multiple Choice
The rouugher the surface, the faster an object will travel over the surface
true
false
- 17. Multiple Choice
How would the absence of friction affect a marble travelling on a long, straight path?
the marble's speed would decrease
the marble would remain at a constant speed
the marble's speed would increase
the marble would stop immediately
- 18. Multiple Choice
When we rub our hands together _________.
frictional force works between them
energy is released
our hands become warm
all off the above
- Answer choicesTagsAnswer choicesTags