science and tecnology

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Across
  1. 3. the machinery and electronic parts of a computer system
  2. 5. a piece of equipment worn over or in the ears that makes it possible to listen to music, the radio, etc. without other people hearing it
  3. 8. able to be added to a computer system so that it can do more t
  4. 9. an object or a piece of equipment that has been designed to do a particular job
  5. 10. a machine that you connect to your telephone to answer your calls and record any message left by the person calling
  6. 12. any of the tubes that carry blood from all parts of the body towards the heart
  7. 13. a small round piece of thin plastic that you put on your eye to help you see better
  8. 17. a piece of equipment for loading a battery with electricity
  9. 18. the use of living cells and bacteria in industrial and scientific processes
  10. 19. a sudden failure of a machine or system, especially of a computer or computer system
Down
  1. 1. a machine that makes copies of documents, etc. by photographing them
  2. 2. a computer program that searches the Internet for information, especially by looking for documents containing a particular word or group of words
  3. 4. a collection of cells that form the different parts of humans, animals and plants
  4. 6. the flat surface at the front of a television, computer, or other electronic device, on which you see pictures or information
  5. 7. a system that cools and dries the air in a building or car
  6. 11. a device in a wall that you put a plug into in order to connect electrical equipment to the power supply of a building
  7. 13. a video camera that records pictures and sound and that can be carried around
  8. 14. moving stairs that carry people between different floors of a large building
  9. 15. the part of a computer where information is stored; the amount of space in a computer for storing information
  10. 16. the branch of science and technology that studies electric currents in electronic equipment