Discoveries and famous inventions

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