Q3. Which planet has an eccentricity most similar to Earth's eccentricity? Neptune and Venus
Q4. What does Kepler's First Law tells us about the orbit of the planets? Ellipse
ACTIVITY 5
Q1. How the distance of the planet from the sun affect planet's orbital velocity?
- A planet's orbital speed changes, depending on how far it is from the Sun. The closer a planet is to the Sun, the stronger the Sun's gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun's gravitational pull, and the slower it moves in its orbit.
Q2. What happen to the orbit period of planets as their distance from the sun increases?
- A planet farther from the Sun not only has a longer path than a closer planet, but it also travels slower, since the Sun's gravitational pull on it is weaker. Therefore, the larger a planet's orbit, the longer the planet takes to complete it.
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