Conceptual Integrated Science
3rd Edition
ISBN: 9780135197394
Author: Hewitt, Paul G., LYONS, Suzanne, (science Teacher), Suchocki, John, Yeh, Jennifer (jennifer Jean)
Publisher: PEARSON EDUCATION (COLLEGE)
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Textbook Question
Chapter 1, Problem 22TS
Eratosthenes measured the height of the vertical pillar in Alexandria to be 8 times greater than the length of the shadow it cast at high noon. So the ratio of (length of shadow)/(height of pillar) is 1/8. If the sun were lower in the sky, would the ratio be smaller or larger?
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Chapter 1 Solutions
Conceptual Integrated Science
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Why did Pythagoras believe that Earth should be spherical?arrow_forwardWhat are two ways in which Aristotle deduced that Earth is spherical?arrow_forwardSuppose Eratosthenes had found that, in Alexandria, at noon on the first day of summer, the line to the Sun makes an angle 30° with the vertical. What, then, would he have found for Earth’s circumference?arrow_forward
- The shadow cast by a vertical pillar in Alexandria at noon during the summer solstice is found to be 1/8 the height of the pillar. The distance between Alexandria and Syene is 1/8 Earth’s radius. Is there a geometric connection between these two 1-to-8 ratios?arrow_forwardHow did Hipparchus discover the wobble of Earth’s axis, known as precession?arrow_forwardOn what did Plato base his knowledge? Was it opinions, policies, marketing, public relations, myths, evidence, hypotheses, beliefs, laws, principles, theories? On what do modern astronomers base their knowledge?arrow_forward
- What two factors made it difficult, at first, for astronomers to choose between the Copernican heliocentric model and the Ptolemaic geocentric model?arrow_forwardIn Ptolemys model, how do the epicycles of Mercury and Venus differ from those of Mars, Jupiter, and Saturn?arrow_forwardWhich do you think was more important in the development of ancient astronomy: its practical or philosophical role?arrow_forward
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