Home
Search
Create
Library
Topics
Student
Teacher
Admin
Map
Sign in for more features
YourStory
Home
Search
Create
Library
Topics
Student
Teacher
Sign in
Feedback
Contact Us!
Assessment
What was a key improvement in Kepler's model compared to Ptolemaic astronomy?
The orbits of planets are elliptical
The Earth is at the center of the universe
The planets move in circular orbits
The stars are fixed on a celestial sphere
Which of the following laws did Kepler formulate to describe planetary motion?
Law of Universal Gravitation
Kepler's First Law
Law of Inertia
Laws of Motion
How did Kepler’s beliefs about planetary motion differ from those of Ptolemy?
Kepler believed in circular motion only
Kepler emphasized the Sun's role in planetary movement
Kepler dismissed the heliocentric model entirely
Kepler believed in constant planetary speeds
Submit