Simple Machines Test

Simple Machines TestIncreasing the load of an object.Changing the amount of force needed.Changing the direction of the force.Both B and C.

1. Simple machines make work easier by

a. wedge b. lever c. screw d. pulley 2. A simple machine with a bar that pivots at a fixed point is a(n)

a. wedge b. pulley c. screw 3. Which of the following simple machines has a grooved wheel that holds a rope?

an increase in distance the object can move.There is less force needed to move the object.There is no advantage. 4. What is the advantage when the fulcrum is closer to the load in a first class lever?

pushing things apart.keeping objects in place.both a and b. 5. A wedge works by

a. trueb. false 6. Simple machines reduce the amount of work being done.

a. wedgeb. screwc. lever 7. Which simple machine is actually an inclined plane wrapped around a cylinder?

a. fixed b. movablec. compound 8. Which of the following pulleys does not decrease the amount of force needed to move an object?

a. fixed b. movablec. compound 9. Which of the following pulleys gives the greatest increase in the distance that you could move an object?

a. fixed b. movablec. compound 10. Which of the following pulleys gives you the greatest amount of increased force when moving an object?

a. example 1 b. example 2 11. Which inclined plane produces the most advantage when moving an object?

Allows you to use less force needed to move heavy objects.Allows you to travel a farther distance when moving an object.The inclined plane does not provide a mechanical advantage.12. What advantage does an inclined plane provide when moving an object?

a. screwb. wedgec. lever13. You remember to place the lid back on the peanut butter jar, what simple machine did you use?

a. wedge b. lever c. screw14. You need to block a door open, what simple machine would you use?

a. screw b. lever c. inclined plane 15. A hammer is an example of what simple machine?

a. wheel and axle b. lever c. wedge16. A door knob is an example of what simple machine?

a. lever b. inclined planec. pulley17. If you had to move a heavy rock with a board and a stone, which of the following simple machines would you use?

a. lever b. inclined planec. pulley18. Stairs are an example of which simple machine?

a. simple machine b. complex machine c. compound machine19. A machine that has more than one simple machine is called

a. screw b. inclined planec. wedge20. A door stop is an example of a(n)

a. leverb. incline plane c. fixed pulley 21. A piano needs to be moved to a third floor apartment, what simple machine would you use?

a. lever and wedge b. lever and incline plane c. pulley and screw22. What two simple machines make up the compound machine of a pair of scissors?

a. There is no disadvantage to using an inclined plane. b. An inclined plane makes you travel a farther distance to move an object.

c. An inclined plane makes you use more force to move the object.23. What is the disadvantage to using an inclined plane to move a heavy object?

a. true b. false24. Simple machines make work easier.

a. screw b. inclined planec. wedge25. You are going to chop some wood for a fire, what simple machine would you use?