WONDER #2070: Who Invented Gears?

Question 1 of 3

A gear system like that used on a bicycle can be found in the hind leg joints of which insect?

  1. Issus
  2. mosquito
  3. ant
  4. badger

Question 2 of 3

Which of the following is NOT something you can do when you pass power from one gear wheel to another?

  1. increase speed
  2. increase force
  3. increase speed and force at the same time
  4. change direction

Question 3 of 3

Which of the following is NOT a type of gear?

  1. helical
  2. bevel
  3. spur
  4. spatula

Check your answers online at https://www.wonderopolis.org/wonder/who-invented-gears.