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Author Question: How did Eratosthenes estimate the size of Earth? (Read 13 times)

RRMR

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on: Feb 28, 2020

Question 1

In the Ptolemaic (Greek) model of the universe, the stars are attached to the ________.
◦ zodiac
◦ celestial sphere
◦ plane of the ecliptic
◦ stadia
◦ deferent

Question 2

How did Eratosthenes estimate the size of Earth?
◦ They used the height of sailing ships as they sailed over the horizon to estimate curvature of Earth, which allowed estimation of its size.
◦ They didn't; everyone thought the world was flat until Columbus' time.
◦ They measured the altitude of mountains in Greece, then used the distance they were lost from sight to estimate the curvature of Earth, which allowed estimation of the its size.
◦ They measured the angle of the Sun above the horizon at midday in two places with different latitude and used the angle to estimate the circumference of Earth.
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Marked as best answer by RRMR on Feb 28, 2020

jlaineee

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Reply #1 on: Feb 28, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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RRMR

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Reply 2 on: Feb 28, 2020
Great answer, keep it coming :)

flexer1n1

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Reply 3 on: Yesterday
Excellent

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