Scientists and Inventors in U.S. History

Which individual invented the polio vaccine?

• Jonas Salk

• Eli Whitney

• Cyrus McCormick

• Alexander Graham Bell

Which individual invented the mechanical reaper?

• Jonas Salk

• Eli Whitney

• Cyrus McCormick

• Alexander Graham Bell

Which individual invented the cotton gin?

• Jonas Salk

• Eli Whitney

• Cyrus McCormick

• Alexander Graham Bell

Which individual invented the telephone?

• Jonas Salk

• Eli Whitney

• Cyrus McCormick

• Alexander Graham Bell

Which of the following inventions did Alexander Graham Bell invent?

• the photophone

• the telephone

• the metal detector

• all of the above

Which of the following inventions helped make it easier to clean cotton?

• The telephone

• the mechanical reaper

• the polio vaccine

• the cotton gin

What can the reader infer about the famous scientists and inventors in U.S. History?

• They were not afraid to explore new lands.

• They helped make people’s lives easier with their inventions.

• They wanted to get as much money as possible with their inventions.

• They did not have a way to share their inventions with others.