WONDER #431: How Do Locks Work?

Question 1 of 3

What type of lock uses a secret set of numbers to open it rather than a key?

1. pin-and-tumbler
2. combination
3. locker
4. keyless

Question 2 of 3

Which type of lock requires a key to unlock it?

1. pin-and-tumbler
2. combination
3. keyless
4. locker

Question 3 of 3

A pin-and-tumbler lock will open when the key slides in, causing the pins to align with what?

1. cylinder
2. tumbler
3. pin
4. shear line

Check your answers online at https://www.wonderopolis.org/wonder/how-do-locks-work.