Kepler's Three Laws Flashcards
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Questions and Answers

What is Kepler's First Law?

  • The planets orbit in an elliptical shape. (correct)
  • The sun is at the center of the planet's orbit.
  • A planet's orbit is not affected by the sun's mass.
  • The planets orbit in a circular shape.
  • What does Kepler's Second Law state about a planet's orbit?

    A planet spends equal amount of time in its orbit at perihelion & aphelion.

    What does Kepler's Third Law relate?

    The time it takes a planet to orbit the sun is related to its distance from the sun.

    Study Notes

    Kepler's First Law

    • Planets move in elliptical orbits with the Sun situated at one focus of the ellipse.
    • The second focus of the ellipse is irrelevant due to the Sun's significant mass and gravitational influence on the planets.

    Kepler's Second Law

    • A planet sweeps out equal areas in equal times during its orbit around the Sun.
    • This implies that a planet travels faster when it is closer to the Sun (perihelion) and slower when it is farther away (aphelion).

    Kepler's Third Law

    • The time taken for a planet to complete one orbit around the Sun is proportional to the average distance between the planet and the Sun.
    • This law illustrates a relationship akin to that of runners on a track, where the orbital period increases with the distance from the Sun.

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    Description

    Test your knowledge of Kepler's Three Laws of planetary motion with these flashcards. Each card provides a definition that helps you understand how planets move in their orbits around the sun. Perfect for students of astronomy or anyone interested in the fundamentals of celestial mechanics.

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