WONDER #1981: What Is a Simple Machine?

Question 1 of 3

The wheel and axle enabled humans to move goods long distances more easily by reducing what force?

  1. gravity
  2. wind
  3. friction
  4. heat

Question 2 of 3

Which of the simple machines is a twisted version of the inclined plane?

  1. wheel and axle
  2. wedge
  3. computer
  4. screw

Question 3 of 3

Which of the following items could you add to a wheel and axle to create a pulley?

  1. rope
  2. pasta
  3. glue
  4. wedge

Check your answers online at https://wonderopolis.org/wonder/what-is-a-simple-machine.