Eratosthenes First Learned About the Position of the Sun in Mid-Summer

question 2

Multiple Choice

Eratosthenes first learned about the position of the Sun in mid-summer by

• A)consulting library information.
• B)setting up a stick at Syene.
• C)setting up a stick at Alexandria.
• D)setting up sticks at both Syene and Alexandria.
• E)none of the above

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Definitions:

Phosphorus

A chemical element essential to all living organisms as part of energy-transferring molecules and structural compounds.

Hydroponics

Growing plants in an aerated solution of dissolved inorganic minerals (i.e., without soil).

Aerated Water

Water that has been infused with air or gas, often carbon dioxide, to create a bubbly or effervescent texture.

Mycorrhizae

Mycorrhizae refer to the symbiotic relationship between certain fungi and the roots of plants, enhancing nutrient absorption and resistance to pathogens.