Question

1 matching 1 point match keplers laws of planetary motion with their (simplest) meaning. 1st law 3rd law 2nd law planets move faster when closer to the sun planet orbits are elliptical planets further from the sun take longer to complete an orbit

Explanation:

To solve this, we recall Kepler's Laws:

• 1st Law (Law of Ellipses): States that the orbit of a planet around the Sun is an ellipse with the Sun at one of the two foci. So "planet orbits are elliptical" matches the 1st Law.
• 2nd Law (Law of Equal Areas): A line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time. This implies planets move faster when closer to the Sun (since the area swept is constant, a shorter distance from the Sun means a faster speed to cover the same area in the same time). So "planets move faster when closer to the Sun" matches the 2nd Law.
• 3rd Law (Law of Harmonies): The square of the orbital period of a planet is proportional to the cube of the semi - major axis of its orbit. In simpler terms, planets farther from the Sun take longer to complete an orbit. So "planets further from the Sun take longer to complete an orbit" matches the 3rd Law.

Answer:

1st Law - planet orbits are elliptical
3rd Law - planets further from the Sun take longer to complete an orbit
2nd Law - planets move faster when closer to the Sun