Sheet # 73/Science
Name: _____________________ Date_____________
Show your work.
1. The Telescope was made by Galileo in 1610. The Mount Palmer 200-inch reflector telescope was built in 1948. How many years later was that?
2. Thomas Edison was born in 1847 and died in 1931. How long did he live?
3. Edison invented the electric light bulb in 1879. How old was he then?
4. Albert Einstein was born in 1879 and died in 1955. How long did he live?
5. Electricity generated from atomic energy was developed in 1951. How old was Einstein then?
6. Louis Pasteur prevented diseases by vaccination in 1881. Polio vaccine was developed by Jonas Salk in 1953. How many years later was that?
7. The first adding machine was invented by Pascal in 1642. How many years ago was this?
8. The microscope was invented by Janssen in 1590. How many years ago was this?
9. The first manned satellite went into orbit in 1961. How many years ago was this?