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Prehistoric Life. What was our planet like a long time ago?. Prehistory vs. History What is the difference?. Most of the time that people have lived on Earth has been during what we call prehistory . Today we live during the time period known as history . - PowerPoint PPT Presentation
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Prehistory vs. HistoryWhat is the difference?
• Most of the time that people have lived on Earth has been during what we call prehistory.• Today we live during the time period
known as history.• When did one end and the other
begin?• In one word, WRITING.
Prehistory is the time before writing was
invented.
2000 CE1 CE2000 BCE4000 BCE
3500 BCEWriting is invented in Mesopotamia
Prehistory History
How do fossils form?• In order to form, fossils need to have very specific conditions.•Most things do not become fossilized when they die.
Unstable rocks below the fish slip and cause sediment (sand, dirt, rotting plants) to quickly cover the fish. Under the sediment, bacteria break down the rest of the fish, leaving just the skeleton.
As time goes by the minerals in the skeleton dissolve and are replaced by minerals from the surrounding sediment.
What can artifacts tell us about the past?
• The size of spear tips can tell what types of animals people hunted.
• Large spear tips were used to hunt large animals like mammoths or deer.
• Small spear tips were used to hunt small animals like birds and rabbits.
What are the downsides to just using fossils and artifacts to try to determine what prehistoric life was like?• Because there were no written
records, archaeologists can only take their best guess when studying fossils and artifacts.• Much of what we know about
prehistoric times is just the best guesses of archaeologists.• Some things that people thought 50
years ago have been proven false.
How do we know about what happened in the world in the time period we know as history?• Fossils take so long to form that none exist from the time writing was invented.• However, archaeologists still study artifacts.• But now they study them together with oral traditions and written records.
What are oral traditions?• Oral traditions are stories
about the past that are told and passed from one generation to the next.
• In Africa, the storytellers are called griots.
• Oral traditions are not always accurate. Sometimes they change as they are told and contain exaggerations.
WRITTEN RECORDS• What are written
records?• Basically anything
can be considered a written record and can be valuable to archaeologists.
• For example…
1. Governmental documents
2. Tomb walls3. Business contracts4. Religious
documents5. Copies of
speeches made by leaders
6. Work done by a student in school