gr4 history term 4 - communication

Question 1

what are some types of communication?

Answer 1

talking to each other by
- telephone
- sign language
- more code
- speaking in person
- whatsapp & other social media
- braille
- in writing (letters, emails, newspapers etc)
- radio

Question 2

how old is the postal system?

Answer 2

thousands of years

Question 3

what can be a problem swith the postal system?

Answer 3

it can be very unreliable
takes a long time
letter are sometimes lost and never arrive

Question 4

what is a post stone?

Answer 4

a special stone on Robben Island that the first European sailors left letters underneath for ships returning to Eurpoe to take back with them

Question 5

Describe the today’s postal system?

Answer 5

• Mail can be sent ANYWHERE in the world
• the sender pays in advance usually by buying STAMPS to put on the mail
• people put letters & package into a postbox
• we also use COURIER services to send mail & packages

Question 6

What is a radio?

Answer 6

a form of communication invented about 100 years ago,
that sent and received signals without using wires,
so that people could listen to programmes in their OWN HOMES

Question 7

why was the radio sometimes called a wireless?

Answer 7

it sent radio signals without wires

Question 8

why was the radio so popular?

Answer 8

because people could listen to entertainment in their OWN HOMES. in the 1920s the stations were broadcasting news, music, sports, drama and variety

Question 9

who invented the radio?

Answer 9

many clever people contributed but mainly GUGLIELMO MARCONI who was an Italian teenager who was fascinated by radio signals. He won a Nobel Prize for his work

Question 10

what is a television?

Answer 10

a device that invented in 1930s that allowed people to hear sound and see moving pictures on a screen

Question 11

when did people in South Africa get television

Answer 11

in 1976

Question 12

why was the television a good invention?

Answer 12

because it has many benefits, such as:
- LEARB about the world (with news and programmes about animals/space/history)
- brings families and friends TOGETHER to watch SPORT and favourite shows
- entertainment
- teaches new things (cooking, music)

Question 13

why was the television a bad invention?

Answer 13

it has many negative effect, such as:
- encourages LAZINESS (watching too much and not exercising or playing outside)
- too much can be bad for our eyes and HEALYH
- violent/SCARY shows can make people afraid/worried
- can WASTE TIME (instead of reading/learning/spending time with family/friend)

Question 14

How should you write an answer that needs to be paragraph?

Answer 14

Use HAMBURGER paragraph writing

Question 15

what is the QWERTY keyboard?

Answer 15

the keyboard designed to stop the letters JAMming when people typed QUICKLY on the old non-electric typewrites
named from the first 5 letters on the top right

Question 16

Why do computers use the QWERTY keyboard?

Answer 16

because people were used to it

Question 17

who invented the telegraph?

Answer 17

Samuel Morse

Question 18

what code did the telegraph use?

Answer 18

Morse code which is a combination of dots and dashes. Each letter of the alphabet has it’s own combination of dots and dashes

Question 19

how did telegraphs work?

Answer 19

• the sender TYPE in the dots and dashes
• the SIGNAL was sent to the receiver
• the receiver (machine/device) made a PAPER copy with raised dots and dashes
• the receiver (person) TRANSLATED the dots and dashes

Question 20

who invented the telephone?

Answer 20

Alexander Graham Bell

Question 21

when was the telephone invented?

Answer 21

1876
(148 years ago)

Question 22

how does the telephone work?

Answer 22

communicates sounds along electrical wires

Question 23

how have cellphones changed our daily lives?

Answer 23

1. Communication - made it easy to stay connected to loved ones from anywhere with calls, text messages and instant message apps. Cells phones make the world feel smaller and brings people closer together
2. Work- revolutionised. Email, calendar apps, productivity tools so we can work remotely, flexibly, stay organised
3. Information access - everyone now has a “library in their pocket” . Browse internet, read news, educational resource, learn new skills

Question 24

Describe the first cameras

Answer 24

Big and heavy (even the first hand held cameras)
Hard to use and carry around
Difficult to develop the photos, which had to be done quickly in a dark room

Question 25

what were the first computers like?

Answer 25

very big and difficult to use.

Question 26

where were the first computer mainly used?

Answer 26

universities and governments

Question 27

when did Martin Cooper make the first cell phone call?

Answer 27

3 April 1973

Question 28

Describe how cell phones have changed over time

Answer 28

Used to be very BIG, just for phone CALLS and not many people owned them
Now very SMALL and can do many more things (apps, messages, cameras)

Question 29

What was the Kodak?

Answer 29

a small box camera invented by George Kodak. It used rolls of film and anyone could use it.w

Question 30

hen did people start using digital cameras?

Answer 30

in the 1990s

Question 31

describe digital cameras

Answer 31

cameras that do not need film, and you can check the photos on the camera screen immediately after taking them

Question 32

what was the computer revolution?

Answer 32

when computers became smaller and easier to use, so that ordinary people could buy then to use in homes, school and at work

Question 33

what is a PC?

Answer 33

a Personal Computer

Question 34

Who is Bill Gates?

Answer 34

was involved in the computer revolution
spent all his spare time trying to make better computers
he founded a company called Microsoft

Question 35

what has transformed the way we use computers in the 21st century?

Answer 35

mobile and cloud computing
smartphones and tablets allow people to access data and apps from anywhere

Question 36

what is the internet?

Answer 36

a wireless network that allows computers to share information

Question 37

when did the internet start?

Answer 37

early computer networks that allowed computers to share information were first invented in the 1960s

Question 38

when was the World Wide Web invented?

Answer 38

1994 by a computer programmer named Bill Joy

Question 39

when did dot-com companies and online services become popular?

Answer 39

in the late 1990s and early 2000s

Question 40

list three examples of social media platforms

Answer 40

YouTube
Facebook
Twitter

Question 41

how did social media change the internet?

Answer 41

it made it easier for people to connect, share and create content online

Question 42

how did the internet change our lives?

Answer 42

made it easier
- to communicate and connect with people,
- access and share information
- to do shopping and get other services (online)

Question 43

how has technology made communication easier and better?

Answer 43

• can reach anyone QUICKLY over any distance (telegraph, telephone, cellphones, internet)
• SHARE news and entertainment across the world, bringing people together (radios, TVs and the internet)
• WORK flexibly with people from ANYWHERE with video calls/meeting, emails, share documents etc (computers and the internet)