A simple machine is a device that
a) Reduces effort needed to do work
b) Increases work done
c) Requires no force to operate
d) Makes work harder
Which of the following is a type of simple machine?
a) Lever
b) Engine
c) Generator
d) Motor
Which simple machine is a sloping surface used to raise objects?
a) Wedge
b) Lever
c) Inclined plane
d) Screw
A pair of scissors is an example of which type of simple machine?
a) Pulley
b) Wedge
c) Lever
d) Wheel and axle
Which simple machine is used in flagpoles to raise flags?
a) Wedge
b) Pulley
c) Lever
d) Screw
A ramp is an example of which simple machine?
a) Wedge
b) Inclined plane
c) Pulley
d) Lever
Which simple machine is used to cut objects easily?
a) Pulley
b) Wedge
c) Wheel and axle
d) Lever
A seesaw is an example of which type of simple machine?
a) Pulley
b) Lever
c) Wedge
d) Wheel and axle
Which simple machine consists of a wheel with a rope or chain wrapped around it?
a) Lever
b) Pulley
c) Screw
d) Wedge
A screw is a modified form of which simple machine?
a) Lever
b) Wedge
c) Inclined plane
d) Pulley
Which simple machine helps to hold two objects tightly together?
a) Screw
b) Pulley
c) Lever
d) Wheel and axle
The mechanical advantage of an inclined plane increases when
a) Its length increases
b) Its height increases
c) It becomes vertical
d) It becomes shorter
A door knob is an example of which simple machine?
a) Lever
b) Pulley
c) Wheel and axle
d) Wedge
A knife blade is an example of which simple machine?
a) Inclined plane
b) Lever
c) Wedge
d) Screw
Which simple machine is found in a bicycle?
a) Pulley
b) Wedge
c) Wheel and axle
d) Screw
A crowbar is an example of which class of lever?
a) First-class
b) Second-class
c) Third-class
d) No-class
Which of these simple machines is used in a hand drill?
a) Screw
b) Lever
c) Pulley
d) Wedge
A bottle opener is an example of which class of lever?
a) First-class
b) Second-class
c) Third-class
d) No-class
What simple machine is used in a wheelbarrow?
a) Pulley
b) Lever
c) Wheel and axle
d) Wedge
Which simple machine is used in a car jack?
a) Pulley
b) Lever
c) Screw
d) Wedge
What type of simple machine is a chisel?
a) Lever
b) Wedge
c) Pulley
d) Screw
Which simple machine helps lift heavy objects by applying force downward?
a) Inclined plane
b) Pulley
c) Wedge
d) Screw
Which class of lever has the fulcrum between the effort and load?
a) First-class
b) Second-class
c) Third-class
d) None
Which simple machine is used in a pizza cutter?
a) Wedge
b) Lever
c) Wheel and axle
d) Pulley
Which of the following is an example of a third-class lever?
a) Hammer
b) Tweezers
c) Seesaw
d) Scissors
Which simple machine is used to hold objects together, like in a vise?
a) Lever
b) Screw
c) Pulley
d) Wheel and axle
Which simple machine is used in a fishing rod?
a) Pulley
b) Lever
c) Wheel and axle
d) Wedge
A nutcracker is an example of which class of lever?
a) First-class
b) Second-class
c) Third-class
d) None
Which simple machine is used in an axe?
a) Lever
b) Pulley
c) Wedge
d) Wheel and axle
Which simple machine is present in a doorknob?
a) Lever
b) Pulley
c) Wheel and axle
d) Wedge
