G4 Communication Through Time Flashcards
What are the four earliest types of communication?
Postal Stones
Runners
Horeseback Riders
Stage/Mail Coaches
What are postal strones?
Ships travelled to and from the east and left letters wrapped in oilskins under a postal stone.
How did we communicate through runners?
Slaves carried letters in a cleft stick and run from farm to farms.
How did we communication through horseback riders?
As distance grew between communities horseback riders rode between them delivering letters.
How did we communicate through stage/mail coaches?
Stage coaches traveled between towns and carried passengers.
What are seven types of modern communication?
Post Radio Typewriters Telegraph Telephone Camera Personal Computer (PC)
What does the Post System do?
Sends letters and parcels.
How did the first people deliver the post?
Ran with messages, then animals were used to get the messages faster.
Why do you have to buy a postage stamp?
To pay for sending the letter.
How do radios work?
Changes sounds or signals into radio waves which travel through air, space and solid objects.
The radio receiver then changes them back into the sounds, words and music we hear.
In 1895 who invented the first wireless telegraph?
Guglielmo Marconi.
He used radio waves to transmit Morse Code.
Why was the first radio called a wireless telepgraph?
Because it was not attached to wires.
What is a typewriter?
A typewriter is a small machine that people used to write printed words on a piece of paper.
Some of the benefits of typewriters:
Help blind people write letters. Quicker then writing by hand. Print was easier to read than handwriting Could make more than one copy Could type in capital letters
Are the letters on a key board in alphabetical order?
No.
What does the telegraph do?
Sends messages along a wire. It sends electrical signs instead of words.
Who invented Morse code?
Samuel Morse.
How does Morse Code work?
It uses electrical signals to represent letters and numbers.
How was the telephone better than the telegraph?
The telegraph on send signals along wires, the telephone allowed people to send voice messages along wires.
How have telephones changed life?
Communication became easier and quicker.
People could call in emergencies.
Helped businesses.
Who invented the telephone?
Alexander Graham Bell.
Describe first cameras.
Room sized.
Took a lot of time to take a photo.
Photos were in black and white.
Not great quality photos.
Changes that cameras have bought us
Photos in news reports Photos of important people Advertising of products Photos of different parts of the world Photos of family and friends
A Personal Computer (PC) can do what kind of things:
Store Information Connect to the internet Type letters Play games, music, movies Send emails. Do math calculations Design things
