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- 1. Multiple Choice
The direction of the force of friction is always _____ the direction of motion
similar to
opposite
unchanged in
the same as
- 2. Multiple Choice
Which of the following are lubricants?
oil and butter
sand and sawdust
- 3. Multiple Choice
Which of these materials do you predict would have the MOST amount of friction?
metal
tile
sand paper
plastic
- 4. Multiple Choice
The amount of friction depends on the weight of the objects pressing together and
the volume of the objects
the texture of the surfaces
the color of the objects
- 5. Multiple Choice
Wheels on a skateboard most likely experiences-Rolling FrictionSliding FrictionFluid FrictionStatic Friction - 6. Multiple ChoiceSally experiences-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 7. Multiple ChoiceSwimming fish experience-Rolling FrictionSliding FrictionFluid FrictionStatic Friction
- 8. Multiple ChoiceA type of friction that occurs when air pushes against a moving object causing it to negatively acceleratesurface areaair resistancedescent velocitygravity
- 9. Multiple Choice
When there is friction, the energy of an object's motion is converted into _______ energy
heat
electric
solar
geothermal
- 10. Multiple Choice
Only solids can produce friction
true
false
- 11. Multiple ChoiceWhat is the unit called that measures force?weightmeterNewtonkilogram
- 12. Multiple ChoiceHow can friction be reduced?
reduce the force (weight) acting between the 2 surfaces
reduce the roughness of the 2 surfaces coming in contact
use wax, grease or oil
all of the above are ways of reducing friction
- 13. 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
- 14. 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
- 15. Multiple Choice
What type of friction occurs when an object is not moving?
static
sliding
fluid
rolling
- Answer choicesTagsAnswer choicesTags