What is Kepler's First Law of Planetary Motion?
Kepler's Laws

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Science
•
9th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
Kepler's First Law states that planets move in elliptical orbits with the Sun at one of the foci.
2.
FLASHCARD QUESTION
Front
What does Kepler's Second Law state about the speed of planets?
Back
Kepler's Second Law states that a line segment joining a planet and the Sun sweeps out equal areas during equal intervals of time, meaning planets move faster when they are closer to the Sun.
3.
FLASHCARD QUESTION
Front
What is the significance of gravity in Kepler's Laws?
Back
Gravity is the force that causes planets to move in their orbits, influencing their speed and distance from the Sun.
4.
FLASHCARD QUESTION
Front
Which planet has the shortest orbital period around the Sun?
Back
Mercury has the shortest orbital period, taking about 88 Earth days to complete one revolution.
5.
FLASHCARD QUESTION
Front
Which planet has the longest orbital period around the Sun?
Back
Neptune has the longest orbital period, taking about 165 Earth years to complete one revolution.
6.
FLASHCARD QUESTION
Front
What is the relationship between a planet's distance from the Sun and its orbital speed?
Back
The closer a planet is to the Sun, the faster it moves in its orbit; conversely, the farther it is, the slower it moves.
7.
FLASHCARD QUESTION
Front
What is an ellipse in the context of planetary orbits?
Back
An ellipse is a geometric shape that is elongated, resembling an oval, and is the shape of the orbits of planets as described by Kepler's First Law.
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