Inventions

4. The system which killed Louis XVI during the French Revolution.
6. The thing which you use to measure time.
9. The age when the steam machine was invented, from the French Revolution to the present day.
10. The age when printing was invented, from the fifth century to fifteenth century.
11. The machine which you use to clean the dust in the floor.
13. The electronic device whose use is to regulate temperature, it can take out hot air and cold air.

1. A scientific apparatus in the laboratory that you use to watch little things such as bacteria.
2. The third largest country in the world and the place where the atomic bomb was invented.
3. An important Italian inventor, with whom innovation helped humans. One of his inventions was The Vitruvian Man.
5. A rectangular electronic that you use in high school for class.
6. The item whose use is to capture visuals and to record memories.
7. The man whose wife was an important chemist because she discovered radioactivity.
8. The country where Marie Curie was born, is located in Europe, near Germany.
12. The weapon which destroyed the city of Hiroshima and Nagasaki, Japan.
14. The person who invented printing in 1440.