Across
- 5. A difficult project or a business activity.
- 7. Small and efficient, like a modern microphone.
- 9. Being very exact and careful with measurements.
- 12. An idea that changes the world completely.
- 13. One of the first people to explore a new place.
- 14. Showing great attention to every small detail.
- 16. Being clever at solving problems with what you have.
- 17. Not giving up, even in a freezing snowstorm.
Down
- 1. Inspiring respect because of size or power.
- 2. A sudden and important discovery.
- 3. Very complicated or detailed.
- 4. Working alone and away from other people.
- 6. The study of how forces and machines work.
- 8. The roads, bridges, and buildings in a city.
- 10. Something that is easy to carry and move around.
- 11. The car part that sends power to the wheels.
- 15. The ability for a bridge to last a long time.