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- 1. 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 - 2. 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
- 3. Multiple ChoiceRougher surfaces have ...greater frictionless frictionthe same level of friction
- 4. Multiple Choice
Friction is a force that ________ the motion of an object.
generates
opposes
creates
adds to
- 5. Multiple ChoiceSally experiences-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 6. Multiple ChoiceSwimming fish experience-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 7. Multiple ChoiceThe amount of friction depends on the weight of the objects pressing together.TrueFalse
- 8. Multiple ChoiceWhat are 2 factors that determine the amount of friction between 2 objects?Force and roughness between surfaceshills and valleys and how smooth or rough the surface isAmount of force and amount of surface the comes in contactThe force and the weight exerted on the surfaces
- 9. 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
- 10. Multiple ChoiceOn which surface will a toy car travel the furthest?CarpetPolished WoodIce
- 11. Multiple Choice
What type of friction affects a moving car while driving?
fluid friction
sliding friction
rolling friction
fluid and rolling friction
- 12. Multiple Choice
Walking is an example of which type of friction?
fluid
rolling
static
sliding
- 13. Multiple Choice
Applying WD-40 to a squeaky door turns _________ friction into __________ friction.
sliding ---> rolling
sliding ---> fluid
rolling ---> sliding
static ---> rolling
- 14. Multiple Choice
What type of friction will you have when two objects slide against each other?
Sliding
Rolling
Static
Fluid
- 15. Multiple Choice
What type of friction will you see when air or liquid slows an objects movement?
Rolling
Fluid
Static
Sliding
- 16. Multiple Choice
Friction happens because the microscopic hills and valleys of one surface get stuck on the hills and valleys of another surface.
True
False
- 17. Multiple Choice
A football player will use which items to increase friction while playing?
cleats
jersey
gloves
shoulder pads
cleats and gloves
- 18. Multiple Choice
How can friction be helpful?
erosion of topsoil
wearing down of engine parts
allows brakes of a car to operate
holes in socks
- 19. Multiple Choice
How can friction be reduced?
make surfaces rougher
increase force applied to objects in contact
add a lubricant
increase the weight of each object
- 20. Multiple Choice
How is motor oil a real-world application related to friction?
Motor oil is greasy.
Motor oil decreases the friction between engine parts.
Motor oil increases the sliding friction in engine parts.
Motor oil tastes bad.
- Answer choicesTagsAnswer choicesTags