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The Big Bang. Our Galaxy: The Milky Way Other Galaxies.

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Presentation on theme: "The Big Bang. Our Galaxy: The Milky Way Other Galaxies."— Presentation transcript:

1 The Big Bang

2 Our Galaxy: The Milky Way

3 Other Galaxies

4 Our Solar System

5 Earth

6 Plate Tectonics

7 The 1 st 4 Million Years 1859 Charles Darwin wrote On the Origin of Species. Australopithecines & modern humans are hominids, & members of the primate family.

8 Australopithecus Africanus

9 The 1 st 4 Million Years 3 distinguishing characteristics: Bi-pedalism Very large brain Lower position of larynx

10 The 1 st 4 Million Years Homo Habilis: Evolved 2-3 million years ago with brain 50% larger Seeds, grass, leaves, fruits, berries, low protein Extinct by 1 million years

11 Homo Habilis

12 The 1 st 4 Million Years Homo Erectus: 1.8 million years ago Resembled modern man from the neck down Brain 1/3 larger More protein - Social

13 Homo Erectus

14 The 1 st 4 Million Years Homo Sapiens: 400,000 to 100,000 years ago. Brain size increased by another 1/3 Greater speech capacity, expanded diet

15 Migration out of Africa

16 The 1 st 4 Million Years Stone Age (2MM – 4K) Paleolithic (Old) to 10K Neolithic (New) to now

17 The 1 st 4 Million Years Paleolithic (Old Stone Age): Stone tools Scavenging/Foraging Much later hunting Fire - not used for food.

18 Example of Paleolithic Art

19 The 1 st 4 Million Years 2 – parent family Women gathered, cooked, reared the children while the men hunted. Lived in small groups migrating to “chase” their food.

20 The 1 st 4 Million Years 3-5 hours daily for food, shelter and clothing. Time spent gathering, organizing, and passing on information, art, & religion.

21 Agricultural Revolution Neolithic (New Stone Age) Caused by changes in climate 1 st stage: semicultivation, followed by cultivation. Transitions occurred independently in various place of the world.

22 Catal Hüyük

23 Agricultural Revolution Domestication of plants & animals occurred independently around the globe. Exceptions were the Americas, Central Asia & Africa.

24 Agricultural Revolution Global Warming in the Holocene period (beginning 9,000 B.C.E. ) created environmental changes that reduced game & wild plant supplies.

25 Life in Neolithic Communities Advantages of food production-stored extra, sustained health. Society organized in kinship groups.

26 Cultural Expressions Worshiped ancestral and nature spirits. Used the megaliths Spread of language groups

27 Early Towns & Specialists Geographically favored. Villages grew to towns & centers of trade Metal works in the late Neolithic era, gold & silver Support for non-farmers.


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