Unit 3. What’s Your Knowledge? » Стр.71 (18)

Match the words with their definitions. 6. act of inventing something or a useful machine, tool, instrument, etc that has been invented 2. attempt to find out the reasons for some scientific problem 5. change, discovery or invention that brings progress 4. something that gives you advantages or improves your life in someway 7. idea or set of ideas that is intended to explain something about life or the world, especially one that has not yet been proved to be true 1. serious study of a subject that is intended to discover new facts or test new ideas 3. attempt to find a solution to a problem or an explanation for something 8. knowledge about scientific or industrial methods or the use of these methods; machinery and equipment used or developed as a result of this knowledge