UNIT 18: IVENTIONS AND DISCOVERIES

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Across
  1. 2. /ˈplæstɪk/ a light strong material
  2. 4. /ɪˈfekt/ a change that somebody/something causes in somebody/something else; a result
  3. 6. /ˌɑːrtɪˈfɪʃl/ made or produced to copy something natural; not real
  4. 7. /juˈniːk/ being the only one of its kind
  5. 9. /ˈsʌdn/ happening or done quickly and unexpectedly
  6. 12. /ˈɑːpəreɪt/ to work in a particular way
  7. 13. /dɪˈkriːs/ to become smaller in size, number, etc.
  8. 14. /ɪɡˈzækt/ correct in every detail
  9. 15. /ˈkɑːmplɪkeɪtɪd/ made of many different things or parts that are connected; difficult to understand
Down
  1. 1. /ˈdɪdʒɪtl/ (of clocks, watches, etc.) showing information by using figures, rather than with hands that point to numbers
  2. 3. /ɪnˈvɑːlv/ if a situation, an event or an activity involves somebody/something, they take part in it or are affected by it
  3. 4. /ˈestɪmeɪt/ to form an idea of the cost, size, value etc. of something, but without calculating it exactly
  4. 5. /ɪkˈsperɪmənt/ a scientific test that is done in order to study what happens and to gain new knowledge
  5. 8. /rɪˈsɜːrtʃ/ /ˈriːsɜːrtʃ/ a careful study of a subject, especially in order to discover new facts or information about it
  6. 10. /ˈɡædʒɪt/ a small tool or device that does something useful
  7. 11. /ˌɔːtəˈmætɪk/ having controls that work without needing a person to operate them
  8. 14. /ɪˈkwɪpmənt/ the things that are needed for a particular purpose or activity
  9. 16. /læk/ the state of not having something or not having enough of something
  10. 17. /dɪˈskʌvər/ to be the first person to become aware that a particular place or thing exists