Sentence Ordering Quiz
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Questions and Answers

Why did Aristotle believe that the earth was spherical?

  • Because the moon shines only by reflected sunlight.
  • Because Alexandria and Syene have different angles of sun rays.
  • Because the earth tilts on its axis, causing seasonal variations.
  • Because the moon casts a curved shadow during a lunar eclipse. (correct)

    • What was Anaxagoras' explanation for the phases of the moon?

  • He proposed a system of fixed spheres for celestial bodies.
  • The moon shines only by reflected sunlight. (correct)
  • Because the light rays from the sun are parallel.
  • He believed the Earth was the center of the universe.

    • Which Greek astronomer believed that the planets and stars were concentric, crystalline spheres centered on the Earth?

  • Anaxagoras
  • Aristarchus
  • Eudoxus
  • Aristotle (correct)

    • What was the significance of the Sun's angle of 7.2° in Alexandria and 0° in Syene?

    <p>To calculate the circumference of the Earth.</p> Signup and view all the answers

    Why did Eudoxus propose a system of fixed spheres for celestial bodies?

    <p>To carry celestial bodies while they revolve around the Earth.</p> Signup and view all the answers

    Which Greek astronomer was the first to profess the heliocentric view?

    <p>Aristarchus</p> Signup and view all the answers

    What is observed during a lunar eclipse that led the Greeks to conclude the Earth is a sphere?

    <p>The Earth casts a circular shadow on the moon</p> Signup and view all the answers

    Why does the position of the North Star appear different depending on the observer's location?

    <p>Because the Earth is curved</p> Signup and view all the answers

    What is common to the Moon and the Sun?

    <p>They are both spherical in shape</p> Signup and view all the answers

    What is the optical illusion that occurs when a sailing ship disappears over the horizon?

    <p>The ship appears to shrink and then disappears</p> Signup and view all the answers

    Why do the positions of the stars appear to shift depending on the observer's location?

    <p>Because the Earth is curved</p> Signup and view all the answers

    What is the main indicator that the Earth is a sphere?

    <p>The way ships disappear over the horizon</p> Signup and view all the answers

    What is observed during a lunar eclipse that suggests the Earth is spherical?

    <p>The Earth's shadow on the Moon is circular in shape.</p> Signup and view all the answers

    What is an optical illusion that occurs when ships sail over the horizon?

    <p>The ship appears to be sinking into the sea.</p> Signup and view all the answers

    What is the significance of the North Star in ancient astronomy?

    <p>It is a fixed point in the sky, used for navigation.</p> Signup and view all the answers

    What is the term for the astronomical model where the Earth and planets revolve around the Sun?

    <p>Heliocentrism</p> Signup and view all the answers

    What is the longest and shortest day of the year marked by?

    <p>Solstices</p> Signup and view all the answers

    Who is credited with proposing a spherical Earth?

    <p>Pythagoras</p> Signup and view all the answers

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