Question

exam lesson name: motion and forces
exam number: 700696rr
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question 14 of 20 :
select the best answer for the question.

1. while kepler supported the copernican model of the universe, kepler concluded the following:

○ a. all other bodies in the universe move around the earth in circular paths.
○ b. the circular orbits of the copernican model weren’t correct. paths of the planets were elliptical.
○ c. all other bodies in the universe move around the moon in triangular paths.
○ d. the circular orbits of the copernican model weren’t correct. paths of the planets were rectangular.

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Explanation:

To solve this, we analyze each option:

• Option A: The geocentric (Earth - centered) model is not what Kepler supported. Kepler supported the heliocentric model (Sun - centered) like Copernicus but refined the orbit shape, so A is wrong.
• Option B: Kepler's first law states that planets move in elliptical orbits, not circular. Copernicus had the planets moving in circular orbits, and Kepler corrected this by showing elliptical paths. This matches Kepler's conclusion.
• Option C: There is no scientific basis for bodies moving around the moon in triangular paths, and this is not related to Kepler's work, so C is wrong.
• Option D: Planetary orbits are not rectangular. Kepler showed they are elliptical, so D is wrong.

Answer:

B. The circular orbits of the Copernican model weren't correct. Paths of the planets were elliptical.