Map Sapling Learning macmillan learning The ancient Greek astronomer Eratosthene
ID: 111561 • Letter: M
Question
Map Sapling Learning macmillan learning The ancient Greek astronomer Eratosthenes measured the Earth's circumference with remarkable accuracy. What astronomical observation did he make to accomplish this? He measured how far north of due west the Sun set on the summer solstice both in Alexandria and Syene. He compared the altitude of the Sun at noon on the summer solstice in Alexandria with its O O altitude in Syene at the same time. He compared the apparent diameter of the Moon at Alexandria with its diameter at Syene. He watched camels disappear below the horizon on their way from Alexandria to Syene. O Previous Give Up & View Solution Check Answer Next Exit 8 Hint Eratosthenes used the distance between two cities and the fact that there are 360° in a circle to deduce the Earth's circumference.Explanation / Answer
He compared altitude of sun at noon on the summer solistice..............in Seyene at the same time. He had done this using a towers shadow and calculed angle between shadow and the tower.
## PLEASE HIT LIKE##