Chapter One Flashcards
When was Lucy found
30 Nov. 1974
Where was lucy found
at a remote spot near Hadar Ethiopia
When did Lucy die
3.2 million years ago.
What is lucy’s scientific name?
AL 288 I
At the time of her death, how old was Lucy?
25-30
How tall was Lucy
1 meter.
Why is Lucy so famous
40 percent of her bones were found, madeher very complete
What does analysis of Lucy’s skeleton show
that early ancestors of modern human beings walked upright on two feet.
Why is erect walking so crucial
because it frees their arms and hands for other tasks.
What did Lucy and her contemporaries possess?
very small brains, but they could carry objects with their arms and manipulate tools. These abilities alowed them to survive better than many other species
When did the earth come into existence
4.5 billion years ago.
When did the first living organisms make their appearance
hundreds of million years go. Came increasingly complex creatures.
Humanlike cousins appeared
4-5 million years ago
When did homosapiens come
200,000 years ago
Did human society develop in a vacum
no, we were always surrounded by other things
Why were humans so successful
because we developed the ability to exploit the environment
What does prehistory refer to?
the era before writing
Who is involved in finding information about homosapiens
evolutionary biologies.THey have done a lot of work to clarify the relationships between human beings and other animal species
Hwo do we have remarkable similarities with
apes. DNA choromosomal patterns and lifesustaining proteins. there is only a 1.6 difference
We are in the order of
primates
The small genetic makeup and chemistry have led to remarkable advances
In tanzania, kenya, eithiopia and other places, archaeologiests unearthed bones and tools of human ancestors goin gback about
5 mill
Olduvai Gorge in Tanzania and Hadar in Ethiopia yielded
many rich remains
The speicies that lucy and several other species belonged to what genus
Australopithecus
Where did Austrolopithecus flourish
east Africa during long period from 4 million to 1 million years
What was Australopithicus
An homonid belonging to the family homindae which included human and humanlike species
What do evolutionary biologists recognize Australopithecus as?
Genus standing alongside Homo
compared to us, Lucy and other australopthecines would seem
short, hariy and limited intelligence. THey stood someting over 1 meter and weighted 25 punds and had a brain the size of about 500 cntimeters
Compared with other ape and animal species, australopthecines were
sophisticated
Why were australopithecines considered smart?
This is because, they had well developed hands and could use them. Good thumbs, and could grasp tools and perform interacate operations. THey had some ability to communicate verbally but not a well developed brain
The intelligence of australopithecines was sufficient to allow them to do?
Plan complex ventures. THey could travel to obtain particular kinds of stone that they needed for tools. Somtimes distances of 15 kilometers.
What does chemical analysis show about stone
that the australopithecines amde tools from things that were avaliable only at distat sites/
What did their tools include?
Choppers, scrapers and other implements for food .
With the aid of their tools and inelligence
Australopithecines established themselves securely throughout eastern and southern Africa
By about 1 million years ago, australopithecines had disappeared as new species
Belonged to the genus Homo and thus represented creatures considerably differnt from the asutralopithecines
What was the most important of the new species
Homo erectus. Up right human . They possessed a larger brain than the australopithecines
What was the size of the brain
1000 cc. And fashioned more sophisticated tools as well.
What did Homo Erectus add to the asutralopithecines tools
from choppers and scrapers they added cleavers and hadn aces
What were the new cleavers and hand axes useful for
hunting and food preparation. THey also privided protection against predators.