Across
- 2. A number that can only be divided by itself
- 5. The force that keeps us from floating into space
- 6. A secret message written in codes
- 8. A machine that can be programmed to do tasks
- 9. The branch of science that studies matter and energy
Down
- 1. Someone who leads instead of follows
- 3. A trickly question designed to make you think
- 4. A repeating design or rule
- 6. When something makes sense after being confusing
- 7. A system that follows rules to solve problems