Does a lead pencil contain led? ____ What is it made from? ______________________
Writing instruments made from sticks came into use around ...what year? _____________
In the U.S., wood-cased lead pencils were produced where?____ When?___ By who?____
Who invented the Band-Aid? ____________________________
When he found the company's large dressing too cumbersome to fix the numerous cuts and bruises, what did he do?_________________________________________________
What size were the first Band Aids?___________________________________________
Who invented money?_____________________________________________________
What is BARTERING?____________________________________________________
Who invented bartering? __________________________________________________
What is a shekel? ________________________________________________________
Which scientist, successfully transmitted the first TV picture, after years of work, in 1926?___
What is the early mechanical technology? ____________________________________
When did experiments with color televisions begin?______ When could you buy one? _____
When was the first reliable electronic telegraph machines built? _______________________
What was the name of the code uset to transmit letters? ______ Who invented it? ________
The telephone quickly took over from the telegraph. In what year? __________
Who invented the telephone? _______________________________________________
Radio was the first wireless mode of communication. Radios send messages by radio waves instead of _____________?
Who invented the "Wireless telegraph"? _______________________ When? _________
name at least 3 shows that were broadcast over the radio...________ ________ ________
