How Did People Figure Out That The Earth Was Round Without Any Technology?

The video explores the evolution of beliefs about Earth's shape, from the ancient Flat Earth concept to the acceptance of a spherical Earth. It highlights Greek philosophers like Socrates, who used lunar eclipses to argue for a round Earth, and Eratosthenes, who calculated Earth's circumference using observations in Syene and Alexandria. The video also discusses the eventual global acceptance of the round Earth theory, aided by 15th-century voyages that provided concrete evidence. Despite centuries of scientific evidence, some people still support the Flat Earth theory today.

Which philosopher is credited with popularizing the idea that Earth is round?

• Pythagoras

• Aristotle

• Plato

• Socrates

What observation did Eratosthenes use to calculate the Earth's circumference?

• The position of the North Star

• The phases of the moon

• The length of shadows in different cities

• The tides of the ocean

How did the shape of the moon influence early thinkers about Earth's shape?

• It was thought to be flat like Earth

• It was considered a unique shape unlike Earth

• Its round shape suggested other celestial bodies, including Earth, might be round

• Its phases were believed to affect Earth's shape

What event in the 15th century helped to solidify the round Earth theory?

• The invention of the telescope

• The discovery of America

• The completion of a voyage around the Earth

• The publication of a new map

Despite centuries of scientific evidence, why do some people still believe in a flat Earth?

• All of the above

• Lack of access to education

• Mistrust in scientific institutions

• Religious beliefs