Question 1: The concept of the heliocentric Universe was introduced by

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Question 1The concept of the heliocentric
Universe was introduced by

1. Ptolemy
2. Copernicus
3. Galilei
4. Kepler
5. Einstein

Review Quiz No. 4
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Question 2Copernicus improved the concept of
Epicycles by

1. introducing elliptical epicycles.
2. introducing non-uniform motion on epicycles.
3. allowing epicycles to be centered on objects
   other than the Sun.
4. All of the above.
5. Nonsense! Copernicus model did not contain
   epicycles.

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Question 3Which statement about the Galilei not
true?

1. He discovered the phases of Venus.
2. He invented the telescope.
3. He discovered sun spots.
4. He discovered surface features on the moon.
5. He discovered 4 moons of Jupiter.

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Question 4According to Keplers laws of
planetary motion, the sun is of the planets
elliptical orbits.

1. in the center
2. outside
3. in one focus
4. in one of the points on the orbit farthest away
   from the center
5. in one of the points on the orbit closest to the
   center

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Question 5As a consequence of Keplers third
law, Mercury has the of all planets in the
solar system.

1. most eccentric orbit
2. least eccentric orbit
3. shortest orbital period
4. longest orbital period
5. highest surface temperature.

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