Pre-History Flashcards
When was:
1. First Microbial life on Earth
2. First Reptiles and Forests
3. The earliest ancestors of Humans
- 3.8b yrs ago.
- 300mln yrs ago.
- 7mln yrs ago.
When was:
1. The Big Bang [4 Physics Fundamental concepts of the fabric of the universe]
2. The Solar System Formation [How long did it take?]
3. Earth’s Formation
- 13.8b yrs ago. [1. Space 2. Time. 3. Matter. 4. Energy]
- 4.6b. [50mln - 100mln.]
- 4.5b
The 3 Precambrian Eons and their descriptions
Precambrian - Geological Eons [4.6b - 541mln.]
- Hadean Eon 4.6b - 4b
[Molten, hostile planet] [Moon’s formation in collision with Theia] [Crust solidification = Ocean’s form] - Archean Eon 4b - 2.5b
[First Microbial life [single-celled Prokaryotes] on Earth 3.8b] [Earth’s atmosphere lacks oxygen.] - Proterozoic Eon 2.5b - 541mln.
[Oxygen builds up - The Great Oxidation Event] [Eukaryotic cells and eventual multicellular life]
The current Eon and its 3 Era’s with description.
Which Period do we live in?
Phanerozoic Eon [541mln - now]
- Paleozoic Era [541mln. - 252mln.]
The Cambrian Explosion 540mln [Appearance of an extraordinary diversity of life forms.]
First Reptiles and Forests 300mln
“The Great Dying” [Largest extinction - 96% of marine species.] - Mesozoic Era [252mln. - 66mln.] “The Age of Dinosaurs” [Periods: Triassic, Jurassic, Cretaceous.]
First evolutions of birds and flowers.
Extinction of Dinosaurs 66mln - Cenozoic era [66mln - now] Periods: Paleogene, Neogene, Quaternary.]
Mammals - dominant life form. Primates - 200mln. yrs ago. Earliest Human ancestors - 7mln. yrs ago.
Current Period - Quaternary
The Dates of Paleolithic, Mesolithic and Neolithic eras and Copper age.
- 2.6mlnB.C - 10000 BC
- 10000B.C - 8000B.C
- 8000B.C - 3000B.C
- 6000B.C - 3000B.C
How many years ago humanity discovered fire?
1.7mln BC
How long have anatomically correct humans existed for and until how long have they all stayed in Africa?
What brought this change and what year?
- For 200k years
- Until 70k years ago.
- Cognitive Revolution - 70k years ago
When was the last Ice Age
[115k to 11.7k yrs ago]
Venus [God of fertility] statues lasted from - to
[40k BC - 10k BC]
Early Symbolic system and its years
Proto-Writing 5000 BC - 3000BC
[Time before written records]
Prehistory
[The ability to walk upright on two legs]
Bipedalism
[Study of human behavior]
Anthrophology
[Measures the amount of radioactive carbon in fossils to place them in time. Only used on things that once lived]
Carbon dating
[Human made objects with cultural significance]
Artifacts
[Fertile area in a desert with water]
Oases
[Determines age based on the rock layer artifacts are found in
Stratigraphic dating
[Concept advocating for equality]
Egalitarianism
[Small Stone Tools]
Microliths
[Large stone structures or monuments built in theNeolithicandBronze Ages. Religious.]
Megalithic
How and why did Paleolithic, Mesolithic and Neolithic eras end
- End of the last Ice Age.
- End of hunter-gathering lifestyle.
- The rise of metalwork.
Tools of the Mesolithic Era
- Microliths
- Improved Bows & Arrows
- Fishing Rods
Tools of Neolithic Era
- Copper Axes
- Copper Chisels
- Copper Mirrors
Tools of Paleolithic Era
- Hand Axes
- Choppers [Sharp edge stones]
- Spears
[Process of calculating/processing/solving problems using logic or algorithm]
Computation
[Branch of mathematics that deal with numbers]
Arithmetic
[Step-by-step set of instructions or rules]
Algorithm
[Sudden change in political power or lifestyle]
Revolution
[Process of examining your own brain]
Introspection
[Scientific study of the Evolution, Ancestry]
Paleoanthropology
Hierarchy Geological & Historical times and their uses.
Hierarchy of Geologic Time:
Eon [500mln. - 2b+.] Longest unit of time in geological and historical contexts.
Era [50mln. - 500mln.] [Major events - mass extinctions / emergence of dominant life forms.]
Period [10mln - 50mln.] [Specific evolutionary or geological events.]
Epoch [100k - 10mln.] [Finer details - climate changes / specific evolutionary developments.]
Age [1k - 1mln.] [Distinct intervals within an epoch.]
Hierarchy of Human Time:
Era [ 100 - 3k] [Timeline of major events, rulers, or cultural shifts. [Victorian Era] ]
Period [ 300 - 5k] [ Phase of political, social, or technological changes. [Renaissance period] ]
Epoch [50 - 500] [New important developments. [Industrial Epoch] ]
Age [500 - 50k] [General term for a distinct phase in history. [Bronze Age] ]
[collective plant life of a particular region, habitat, or environment.]
Flora
[collective animal life of a particular region, habitat, or environment]
Fauna
[supercontinent that existed during the late Paleozoic Era and the early Mesozoic Era.]
Pangea
[1000 years]
Millennia
2.6mln yrs ago emergence of … - the first accepted member of …
- Homo habilis 2. Homo genus
3.8b yrs ago
300k yrs ago
200k yrs agor
7mln yrs ago
2.6mln yrs ago
Last Ice age
- First microbial life
- First birds and flowers
- First primates
- Hominins
- Homo habilis - First accepted member of homo genus
- 115k - 11.7k yrs ago
Discovery of fire
First anatomically correct humans
Early symbolic system
- 1.7mln yrs ago
- 200k yrs ago
- 5000-3000BC