Understanding Eratosthenes and His Contributions

What evidence did ancient scholars use to support the idea that the Earth is spherical?

• The sound of the ocean

• The shape of clouds

• The color of the sky

• The behavior of stars and ships

How did Eratosthenes determine the Earth's circumference?

• By using the length of a day

• By observing the phases of the moon

• By measuring the distance between two cities and using the angle of the sun's shadow

• By counting the number of steps it takes to walk around the Earth

What nickname was given to Eratosthenes due to his reputation in various fields?

• Delta

• Alpha

• Gamma

• Beta

What is the Sieve of Eratosthenes used for?

• Calculating the circumference of the Earth

• Finding prime numbers

• Measuring the distance between stars

• Determining the age of ancient artifacts

Which field did Eratosthenes NOT contribute to?

• Astronomy

• Medicine

• Geography

• History