Famous inventions and the discoveries

1234567891011121314151617181920
Across
  1. 2. A key invention in the Industrial Revolution that uses steam to power machinery.
  2. 5. to energy produced by splitting atomic nuclei or using nuclear reactions.
  3. 6. A device used for cooling and storing food.
  4. 8. A device used to view distant objects, especially in astronomy.
  5. 9. The molecule that contains the genetic instructions for life.
  6. 10. A form of electromagnetic radiation used for medical imaging.
  7. 12. A machine capable of carrying out complex tasks automatically.
  8. 15. A type of aircraft with vertical lift, powered by rotating blades.
  9. 16. An instrument used for navigation, showing directions.
  10. 18. A system of satellites used to determine exact locations on Earth.
  11. 19. A machine invented by Eli Whitney to separate cotton fibers from seeds.
  12. 20. An instrument used to magnify small objects or organisms.
Down
  1. 1. The first antibiotic discovered by Alexander Fleming
  2. 3. A semiconductor device used in amplifying or switching electronic signals.
  3. 4. An instrument used to measure atmospheric pressure, often for weather forecasting.
  4. 7. A device that converts electrical energy into mechanical motion.
  5. 11. A powered vehicle designed for the transportation of people and goods.
  6. 13. The field of designing and operating aircraft.
  7. 14. A branch of mathematics that deals with rates of change and the accumulation of quantities.
  8. 17. A class of drugs used to treat bacterial infections.