SOLAR SYSTEM

Detailed explanation-1: -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.

Detailed explanation-2: -The period of revolution of a planet around the Sun increases as the distance of the planet increases from the Sun. Hence, greater the distance, greater is the time period.

Detailed explanation-3: -The further away from the Sun it is, the slower the planet’s orbital speed and the longer its path. Both of those factors result in taking longer to make one complete orbit and a planet having a longer year.

Detailed explanation-4: -Basically, that planets do not move with constant speed along their orbits. Rather, their speed varies so that the line joining the centers of the Sun and the planet sweeps out equal parts of an area in equal times.

Detailed explanation-5: -The effect of distance from the Sun on planetary temperatures is explored using energy from a light bulb to simulate solar energy. Planets and moons that are further from the Sun receive less solar energy (sunlight) than planets and moons closer to the Sun.