How Did Eratosthenes Estimate the Size of Earth in 240

question 32

Multiple Choice

How did Eratosthenes estimate the size of Earth in 240 B.C.?

• A) by observing the duration of a solar eclipse
• B) by measuring the size of Earth's shadow on the Moon in a lunar eclipse
• C) by comparing the maximum altitude of the Sun in two cities at different latitudes
• D) by sending fleets of ships around Earth
• E) We don't know how he did it since all his writings were destroyed.

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Definitions:

Subjective Night

The time during a 24-hour period when the biological clock is telling a person to go to sleep.

Melatonin Flux

Variations in the levels of melatonin, a hormone that regulates sleep-wake cycles, typically influenced by light exposure.

Disruptive Malaise

A state of general discomfort or uneasiness, whose exact cause is difficult to identify, that disrupts regular functioning or well-being.

Sleep Disturbances

Varied issues related to sleeping, including difficulty falling or staying asleep, excessive sleepiness, or abnormal behaviors during sleep.