History and prehistory | The Origin of Humans and Human Societies | World History | Khan Academy

How long have anatomically modern humans lived on Earth?

• 2,000 years

• 20,000 years

• 200,000 years

• 2 million years

Which of these human developments is considered the oldest?

• The Roman Empire

• The Egyptian Pyramids

• Written language

• Agriculture

What is the main difference between history and prehistory?

• History is about wars, while prehistory is about peace.

• History uses written records, while prehistory does not.

• History is about humans, while prehistory is about animals.

• History is about the future, while prehistory is about the past.

What important artifact helped people understand ancient Egyptian hieroglyphs?

• Ancient maps

• The Rosetta Stone

• Old paintings

• Oral stories

What is the study of human history and societies through their remains called?

• Paleontology

• Anthropology

• Archaeology

• Geology

What scientific method helps determine the age of ancient human remains up to about 50,000 years old?

• Potassium-argon dating

• Radiocarbon dating

• Stratigraphy

• Fossil analysis

Which dating method is used to find the age of very old volcanic rock by looking at how potassium changes into argon?

• Radiocarbon dating

• Stratigraphy

• Potassium-argon dating

• Dendrochronology

Besides knowing how old something is, what else can archaeologists learn from studying ancient human remains and tools?

• Only the exact date of death.

• The type of animals and plants that lived nearby, their diet, health, and culture.

• Only the size of their brains.

• How to build modern tools.