Across
- 1. quality or different parts of a device
- 8. to check on people
- 9. a small device
- 10. a legal right to own and produce an invention
- 11. not heavy
- 13. useful in everyday life
- 15. to put money into something
- 18. very important, necessary
- 19. ability of a device
- 20. describes something that is powered by the sun
- 21. an invention that has been improved
- 22. cheap; you can buy it
Down
- 2. does a lot of work in a short time
- 3. good for the environment
- 4. to take the place of
- 5. looks good
- 6. programmed to work independently
- 7. very creative
- 10. able to carry it
- 12. to create something brand new
- 14. easy to find or use
- 16. something that makes you feel pressure
- 17. can be created sustainably