Across
- 2. was invented 425 AD
- 3. were invented 50,000 to 100,000 years ago
- 5. was invented 100BC
- 6. was invented around 650 to 600 BC
- 7. was invented in 1960s
- 11. created bye Steve Jobs and Steve Wozniak
- 12. were used in East Asia in 1221
Down
- 1. invented 3300BC
- 3. the first... was designed by Ferdinand Verbiest
- 4. created in Estonia
- 8. Galileo built his own version in 1609
- 9. discoverd in 1901
- 10. was invented by German inventor Hans Schwarzkopf