IV. 1 Isaac Newton-b gravity
2 Thomas Edition-g the light bulb
3 James Watt-h the steam engine
4 Alexander Graham Bell-j the telephone
5 Alexander Fleming-i penicilin
6 Albert Einstein-c theory of relativity
7 Tim Beners-Lee-a the Internet
8 The Wright brothers- d the airplane
9 Bill Gate-f Windows software
10 Mack Zuckerberg-e Facebook
V
2 inventions
3 exploring
4 technology
