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Social sciences: history

Grade 7

The first people

Module 13

The taung child

  • The probable age of the earth is calculated to be 6 billion years. Human beings and their predecessors have only existed for about 5 million to 8 million years, while human beings who have cultivated their own food and have lived in organised communities have only been on the earth for 6 000 to 8 000 years. This takes up hardly one millionth of the world's age.
  • This module will help you to discover something about people who lived millions of years ago. What we have been able to discover about them has come from evidence. Much of this evidence is obtained from bones, tools and painted pictures that have been discovered. But there is virtually no source material for long periods in the past . . .
  • More than 3 000 parts of skeletons belonging to early people have already been gathered in Africa. The accompanying map shows the different places in South and East Africa where these discoveries were made.

  • Africa has become known as the cradle of mankind because some of the oldest human fossils have been discovered here.
  • We'll be finding out how the fossils that archaeologists have found are able to tell us about the lives of these early people.

The human race developed in Africa. The remains of a Southern African child who died about 3 million years ago have provided many clues about early people. This evidence of the earliest member of the human race identified to date was discovered in 1924 in a limestone quarry near the town of Taung (“the place of the big lion”), 80 km north of Kimberley (in the North-west Province. A worker who was blasting limestone in the quarry found a small skull, which was sent to Professor Raymond Dart.

He immediately realised that it was different to anything he had ever seen.

This skull displayed two important features of the human race (hominids), namely:

  • small eye-teeth and
  • an erect posture

The skull was particularly small, which led Professor Dart to conclude that it belonged to a child of about five years of age. This is what suggested the idea of a Taung child. The evidence indicated that the child walked upright, like we do. Professor Dart therefore gave it the scientific name Australopithecus . According to what we know at present, Australopithecus was the first creature that walked upright, like modern people.

Activity 1:

To reconstruct the past

[lo 3.3]

Try to convince your friend by means of scientific arguments that people could not have developed from apes. (Or organise a class debate!)

Source A

Source B

The anatomy of a chimpanzee compels this animal to walk on the outside edges of its feet and therefore to waddle. This differs from the way of walking that is common to human beings, which was also used by Australopithecus .

People are the only primates that walk upright.

This means that the shape of the pelvic girdle, the position of the thighbone and the way in which the feet are placed on the ground are very specific.

The way in which the thighbone bears the weight of the body in humans is also different from how this happens in apes. It is easy to see that Australopithecus is more closely related to human beings than to apes with regard to all these aspects when the Australopithecus skeleton is compared to the skeletons of apes and humans.

Questions & Answers

how does Neisseria cause meningitis
Nyibol Reply
what is microbiologist
Muhammad Reply
what is errata
Muhammad
is the branch of biology that deals with the study of microorganisms.
Ntefuni Reply
What is microbiology
Mercy Reply
studies of microbes
Louisiaste
when we takee the specimen which lumbar,spin,
Ziyad Reply
How bacteria create energy to survive?
Muhamad Reply
Bacteria doesn't produce energy they are dependent upon their substrate in case of lack of nutrients they are able to make spores which helps them to sustain in harsh environments
_Adnan
But not all bacteria make spores, l mean Eukaryotic cells have Mitochondria which acts as powerhouse for them, since bacteria don't have it, what is the substitution for it?
Muhamad
they make spores
Louisiaste
what is sporadic nd endemic, epidemic
Aminu Reply
the significance of food webs for disease transmission
Abreham
food webs brings about an infection as an individual depends on number of diseased foods or carriers dully.
Mark
explain assimilatory nitrate reduction
Esinniobiwa Reply
Assimilatory nitrate reduction is a process that occurs in some microorganisms, such as bacteria and archaea, in which nitrate (NO3-) is reduced to nitrite (NO2-), and then further reduced to ammonia (NH3).
Elkana
This process is called assimilatory nitrate reduction because the nitrogen that is produced is incorporated in the cells of microorganisms where it can be used in the synthesis of amino acids and other nitrogen products
Elkana
Examples of thermophilic organisms
Shu Reply
Give Examples of thermophilic organisms
Shu
advantages of normal Flora to the host
Micheal Reply
Prevent foreign microbes to the host
Abubakar
they provide healthier benefits to their hosts
ayesha
They are friends to host only when Host immune system is strong and become enemies when the host immune system is weakened . very bad relationship!
Mark
what is cell
faisal Reply
cell is the smallest unit of life
Fauziya
cell is the smallest unit of life
Akanni
ok
Innocent
cell is the structural and functional unit of life
Hasan
is the fundamental units of Life
Musa
what are emergency diseases
Micheal Reply
There are nothing like emergency disease but there are some common medical emergency which can occur simultaneously like Bleeding,heart attack,Breathing difficulties,severe pain heart stock.Hope you will get my point .Have a nice day ❣️
_Adnan
define infection ,prevention and control
Innocent
I think infection prevention and control is the avoidance of all things we do that gives out break of infections and promotion of health practices that promote life
Lubega
Heyy Lubega hussein where are u from?
_Adnan
en français
Adama
which site have a normal flora
ESTHER Reply
Many sites of the body have it Skin Nasal cavity Oral cavity Gastro intestinal tract
Safaa
skin
Asiina
skin,Oral,Nasal,GIt
Sadik
How can Commensal can Bacteria change into pathogen?
Sadik
How can Commensal Bacteria change into pathogen?
Sadik
all
Tesfaye
by fussion
Asiina
what are the advantages of normal Flora to the host
Micheal
what are the ways of control and prevention of nosocomial infection in the hospital
Micheal
what is inflammation
Shelly Reply
part of a tissue or an organ being wounded or bruised.
Wilfred
what term is used to name and classify microorganisms?
Micheal Reply
Binomial nomenclature
adeolu
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Source:  OpenStax, History grade 7. OpenStax CNX. Sep 09, 2009 Download for free at http://cnx.org/content/col11023/1.1
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