25. Which of the following simple machines is used for lifting heavy objects and

hold two pieces together?

A. lever B. pulley C. screw D. wedge

26. Which is NOT a simple machine?

A. screw B. lever C. pulley D. fulcrum

27. Which of the following is a sloping surface that reduces the amount of force

required to move

an object?

A. wedge B. lever C. pulley D. inclined plane

28. Which is NOT true about wedges?

A. It is a simple machine.

B. It cuts or splits an object apart.

C. It has a fixed point called fulcrum.

D. It is made up of two inclined planes.

29. Which of the following statements about screw is TRUE?

A. Screws are made of wood.

B. All screws have the same size.

C. Screws do not require a thread.

D. Screws move objects to a greater depth by applying the force.

30. Why do we not just remove the wheel and turn the axle?

A. The wheel balances the axle.

B. The axle cannot turn on its own.

C. Without the wheel, the axle is useless.

D. Turning the axle directly requires too much effort.

31. Which is an example of someone using a simple machine to do work?

A. A boy is crossing the street.

B. A girl is eating her snacks.

C. A mother is sweeping the floor.

D. A father is watching his favorite show.

32. What will you use to get a big rock off the bike path?

A. pliers B. crowbar C. nutcracker D. jackscrew

33. Which of the following are examples of first-class lever?

A. pliers, crowbar, and scissors

B. shovel, tweezers, and fishing rod

C. can opener, wheelbarrow, and nutcracker

D. doorknob, pencil sharpener, and screwdriver​