Timeless Thomas: How Thomas Edison Changed Our Lives

If something is ______ , it is useful, helpful, or important.

• radar

• valuable

• device

• dictation

A _____ is a tool or machine that has a certain purpose.

• breakthrough

• technology

• device

• radar

The word ______ describes the act of writing down or recording words that have been spoken.

• dictation

• breakthrough

• radar

• tenchology

__________ is the use of science to invent useful things or to solve problems.

• radar

• dictation

• device

• technology

__________ is a way to find unseen objects by using radio signals.

• valuable

• device

• radar

• technology

If you make a ______, you make an important discovery after many tries.

• valuable

• breakthrough

• dictation

• radar