<< Chapter < Page
  History grade 4   Page 1 / 1
Chapter >> Page >

History

Grade 4

How transport has served mankind

Module 9

A brief history of sea transportation

Ships from Europe have sailed round the southern tip of Africa since before 1500 – do you remember Diaz and Da Gama?

In 1652 people from the Netherlands under the leadership of Jan van Riebeeck founded a victualling station at the Cape. Dutch sailing ships had large sails that could make excellent use of wind for sailing.

Much development has taken place since that time. Nowadays most large ships are moved by means of powerful engines.

Activity 1

To find the differences between the past and the present [lo 2.3]

A)can you indicate five items that do not match the period shown in the previous sketch by marking them?

B)are you able to identify the following ships?

Steamship ………………………………Fishing boat …………………………….Passenger ship ……………………….Cargo boat ……………………………. Tugboat ………………………………….Yacht …………………………………….Oil tanker…………………………………

C)the cape sea route became more and more important after 1652. why was this?

Ocean routes of the world(The thickness of any line corresponds to the tonnage that is transported.)

D)read the wonderful story of a famous sea adventurer.

Refer to an atlas and ask your educator to help you trace Thor Heyerdahl's voyages.

Write a letter to a friend telling him or her about the adventures of any other famous pioneer – male or female – that navigated the seas. What can you learn from this person?

Thor heyerdahl

The Norwegian scientist and adventurer Thor Heyerdahl was born in Larvik, Norway, on 6 October 1914. He became famous because he undertook a successful sea voyage on a raft, the Kon-Tiki, which made of balsa wood. (This is a strong but very light kind of wood.) He and his five crewmembers undertook this voyage in 1947 and crossed the Atlantic Ocean from Peru to Polynesia in 97 days. The Polynesian islands are approximately 2 000 km from Peru and lie to the north of New Zeeland. The raft was built like those of the ancient Incas and was named after the Polynesian god Tiki . Heyerdahl wanted to prove that the original inhabitants of Polynesia had come from Peru in South America – not from Asia. He believed that they had been able to undertake such long sea voyages.

The course of his successful voyage was described in his book Kon-Tiki , of which more than 20 million copies have been sold. A film that was made in 1950 and which tells the story of this epic adventure later won an Oscar!

Heyerdahl gained public attention again on 17 May 1970 when he and a crew of seven completed a voyage across the Atlantic Ocean in a 12-metre long boat made of papyrus. This boat was called Ra-2 and was built by Indians from the vicinity of Lake Titicaca in South America where this type of boat is used.

Thor Heyerdahl wanted to prove that the ancient Egyptians had reached the Americas long before Columbus, and that they therefore had had a considerable influence on the American Indian civilization. Heyerdahl's voyage from Morocco in North Africa to Barbados, an island in the Caribbean Sea (960 km away) took about 57 days. Historians did not regard this voyage as important. But Heyerdahl and his crew made use of the opportunity to take samples of seawater to provide proof of the degree of oil pollution that was present in the Atlantic Ocean.

Thor Heyerdahl built a reed boat, the Tigris , with the help of South American Indians from the Lake Titicaca region and completed the distance sailed in the Ra-2 in both directions from 1977 to 1978. The evidence that he gathered of the increase in the oil pollution of the ocean was so shocking to him that he burnt his boat in protest.

During the 1980s, Thor Heyerdahl became more and more involved with campaigns against pollution.

Assessment

LEARNING OUTCOME 2: HISTORICAL KNOWLEDGE AND UNDERSTANDING The learner will be able to demonstrate historical knowledge and understanding.

Assessment standard

We know this when the learner:

  • similarity and difference: identifies similarities and differences between past and present ways of doing things in a given context.

Memorandum

  1. Flying saucer, space shuttle, cable car, motorboat, rowing boat with flag.
  2. 1, 3, 8, 6, 5, 7, 4 (2 is a submarine).

c) Centrally situated for different sea-routes – especially for trade.

Questions & Answers

how to know photocatalytic properties of tio2 nanoparticles...what to do now
Akash Reply
it is a goid question and i want to know the answer as well
Maciej
Do somebody tell me a best nano engineering book for beginners?
s. Reply
what is fullerene does it is used to make bukky balls
Devang Reply
are you nano engineer ?
s.
fullerene is a bucky ball aka Carbon 60 molecule. It was name by the architect Fuller. He design the geodesic dome. it resembles a soccer ball.
Tarell
what is the actual application of fullerenes nowadays?
Damian
That is a great question Damian. best way to answer that question is to Google it. there are hundreds of applications for buck minister fullerenes, from medical to aerospace. you can also find plenty of research papers that will give you great detail on the potential applications of fullerenes.
Tarell
what is the Synthesis, properties,and applications of carbon nano chemistry
Abhijith Reply
Mostly, they use nano carbon for electronics and for materials to be strengthened.
Virgil
is Bucky paper clear?
CYNTHIA
so some one know about replacing silicon atom with phosphorous in semiconductors device?
s. Reply
Yeah, it is a pain to say the least. You basically have to heat the substarte up to around 1000 degrees celcius then pass phosphene gas over top of it, which is explosive and toxic by the way, under very low pressure.
Harper
Do you know which machine is used to that process?
s.
how to fabricate graphene ink ?
SUYASH Reply
for screen printed electrodes ?
SUYASH
What is lattice structure?
s. Reply
of graphene you mean?
Ebrahim
or in general
Ebrahim
in general
s.
Graphene has a hexagonal structure
tahir
On having this app for quite a bit time, Haven't realised there's a chat room in it.
Cied
what is biological synthesis of nanoparticles
Sanket Reply
what's the easiest and fastest way to the synthesize AgNP?
Damian Reply
China
Cied
types of nano material
abeetha Reply
I start with an easy one. carbon nanotubes woven into a long filament like a string
Porter
many many of nanotubes
Porter
what is the k.e before it land
Yasmin
what is the function of carbon nanotubes?
Cesar
I'm interested in nanotube
Uday
what is nanomaterials​ and their applications of sensors.
Ramkumar Reply
what is nano technology
Sravani Reply
what is system testing?
AMJAD
preparation of nanomaterial
Victor Reply
Yes, Nanotechnology has a very fast field of applications and their is always something new to do with it...
Himanshu Reply
good afternoon madam
AMJAD
what is system testing
AMJAD
what is the application of nanotechnology?
Stotaw
In this morden time nanotechnology used in many field . 1-Electronics-manufacturad IC ,RAM,MRAM,solar panel etc 2-Helth and Medical-Nanomedicine,Drug Dilivery for cancer treatment etc 3- Atomobile -MEMS, Coating on car etc. and may other field for details you can check at Google
Azam
anybody can imagine what will be happen after 100 years from now in nano tech world
Prasenjit
after 100 year this will be not nanotechnology maybe this technology name will be change . maybe aftet 100 year . we work on electron lable practically about its properties and behaviour by the different instruments
Azam
name doesn't matter , whatever it will be change... I'm taking about effect on circumstances of the microscopic world
Prasenjit
how hard could it be to apply nanotechnology against viral infections such HIV or Ebola?
Damian
silver nanoparticles could handle the job?
Damian
not now but maybe in future only AgNP maybe any other nanomaterials
Azam
Hello
Uday
I'm interested in Nanotube
Uday
this technology will not going on for the long time , so I'm thinking about femtotechnology 10^-15
Prasenjit
can nanotechnology change the direction of the face of the world
Prasenjit Reply
how did you get the value of 2000N.What calculations are needed to arrive at it
Smarajit Reply
Privacy Information Security Software Version 1.1a
Good
Got questions? Join the online conversation and get instant answers!
QuizOver.com Reply

Get the best Algebra and trigonometry course in your pocket!





Source:  OpenStax, History grade 4. OpenStax CNX. Sep 17, 2009 Download for free at http://cnx.org/content/col11089/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'History grade 4' conversation and receive update notifications?

Ask