planets have moons for day and night
Planets have different day lengths due to variations in their rotation speeds and sizes. Planets closer to the Sun, like Mercury, have shorter day lengths because they rotate faster. Larger planets, such as Jupiter, have longer day lengths due to their slower rotation speeds.
24 hours
Rotational time of the planets is random (the length of the planet's day), but the outer planets do spin faster than the inner planets.
The outer planets have longer rotation periods than the inner planets. For example, a day on Jupiter, an outer planet, is about 10 hours long, while a day on Earth, an inner planet, is about 24 hours long.
what is meant by a planets day
The Egyptian word for "planets" meant "planets."
If you meant all terrestrial bodies (including moons) Its io (io has the least amount of water). If you meant terrestrial planets (only planets) its venus and earth they both have an active core
It is the time in which planets orbit the sun.
planets have moons for day and night
A solar system? Is that what you meant?
They go round and round. Not only do they turn on their polar axes, but they also revolve around the Sun. So the planets each have two types of revolution. The Earth turns on its axis every day, and it goes round the Sun once a year.
Planets have different day lengths due to variations in their rotation speeds and sizes. Planets closer to the Sun, like Mercury, have shorter day lengths because they rotate faster. Larger planets, such as Jupiter, have longer day lengths due to their slower rotation speeds.
Gas planets are those planets which are not made up of rocks or materials. They are composed of gases only. Eg- Jupiter
Which planet?
The light of the sun is too bright to make out the planets during the day unless there is an eclipse.
I'll assume you meant to say the gas giant planets (Jupiter, Saturn, Uranus, and Neptune). No they do not have thin crusts.