Across
- 3. What is black when it’s clean and white when it’s dirty?
- 7. What has many keys but can’t open a lock?
- 8. The more of this there is, the less you see. What is it?
- 10. What has to be broken before you can use it?
Down
- 1. I’m tall when I’m young, and I’m short when I’m old. What am I?
- 2. What can you break, even if you never pick it up or touch it?
- 4. Where does today come before yesterday?
- 5. What is always in front of you but can’t be seen?
- 6. What invention lets you look right through a wall?
- 9. What is full of holes but still holds water?