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- 1. Multiple ChoiceFriction is a force that acts in an ___________ direction of movement.similaroppositeparallelwest
- 2. Multiple ChoiceHow does friction affect speed?more friction decreases speedmore friction increases speedless friction decreases speed
- 3. Multiple ChoiceThe rougher the surface, the faster an object will travel over the surface.TrueFalse
- 4. Multiple ChoiceWhen most objects with smooth surfaces rub, there is less friction.TrueFalse
- 5. Multiple ChoiceHow would the absence of friction affect a marble traveling on a long, straight path?The marble’s speed would decrease.The marble’s speed would increase.The marble would stop immediately.The marble would remain at constant speed.
- 6. Multiple ChoiceWhen two surfaces rub, the irregularities of one surface get caught on those of the other surface?TrueFalse
- 7. Multiple ChoiceRougher surfaces have ...greater frictionless frictionthe same level of friction
- 8. Multiple ChoiceWhat does friction produce?lightsoundheatgravity
- 9. Multiple Choice
Which of the following answers is the most scientific answer for the question:
What is friction?
The random force between two solids, liquids, or gases.
The contact force between two solids, liquids, or gases that slide past one another.
The thing that creates static electricity
A force that is random
- 10. Multiple Choice
When there is friction, the energy of an object's motion is converted into _______ energy
heat
kinetic
stronger
friction
- 11. Multiple Choice
Which of the following is NOT an example of friction?
using the brakes on your bike to slow you down
putting your hand out the window
a satellite traveling through deep space
a hockey puck going across an ice rink
- 12. Multiple ChoiceA puck slides along an icy surface. What makes it slow down?It runs out of pushIt rubs against the iceIt runs out of electricity
- 13. Multiple ChoiceOn which surface will a toy car travel the furthest?CarpetPolished WoodIce
- 14. Multiple Choice
Which of the following statements is false?
Friction can only slow things down
Friction is never useful
Friction can stop things from moving
- 15. Multiple ChoiceMovers slide a box down the ramp of a truck.
What helps slow the box as it slides to the bottom of the ramp?frictiongravityinertiamagnetism - 16. Multiple Choice
Only solids can produce friction
true
false
- 17. Multiple ChoiceWhat is the unit called that measures force?weightmeterNewtonkilogram
- 18. Multiple Choice
How can friction be reduced?reduce the force acting between the 2 surfacesreduce the roughness of the 2 surfaces coming in contactuse wax, grease or oilall of the above are ways of reducing friction - 19. Multiple ChoiceThe amount of friction depends on the weight of the objects pressing together.TrueFalse
- 20. Multiple ChoiceA type of friction that occurs when air pushes against a moving object causing it to decelerate.surface areaair resistancevelocitygravity
- 21. 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
- 22. 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
- 23. Multiple ChoiceHow would the absence of friction affect a marble traveling on a long, straight path?The marble’s speed would decrease.The marble’s speed would increase.The marble would stop immediately.The marble would remain at constant speed.
- 24. Multiple ChoiceWhat does friction produce?lightsoundheatgravity
- 25. Multiple ChoiceWhat is the unit called that measures force?weightmeterNewtonkilogram
- 26. Multiple ChoiceThe force that acts in the opposite direction of motion when two surfaces come in contact.ForceFrictionStaticKinetic
- 27. Multiple ChoiceWhat direction does friction act relative to motion?in the same directionin the opposite directionneed more informationdepends on the force
- 28. Multiple ChoiceSally experiences-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 29. Multiple ChoiceWheels of a shopping cart experience-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 30. Multiple ChoiceWheels on a skateboard most likely experiences-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 31. Multiple ChoiceSwimming fish experience-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 32. Multiple ChoiceWhich 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
- 33. Multiple ChoiceHow does friction affect speed?more friction decreases speedmore friction increases speedless friction decreases speed
- 34. Multiple ChoiceThe rougher the surface, the faster an object will travel over the surface.TrueFalse
- 35. Multiple ChoiceHow would the absence of friction affect a marble traveling on a long, straight path?The marble’s speed would decrease.The marble’s speed would increase.The marble would stop immediately.The marble would remain at constant speed.
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