Question

Which best distinguishes between the inner and outer planets?
An asteroid belt is the dividing line between the inner and outer planets.
The increase in the number of moons divides the inner and outer planets.
The inner planets have cooler temperatures than the outer planets.
An additional planet found outside the main orbit is the dividing line.

Answer 1

The four inner planets are smaller, denser and warmer than the four outer gas planets. The four gas planets don't have clear surfaces like the four inner rocky planets. Because they are further away, the out gas planets orbit the sun at slower speeds and at slower rates - taking much longer in general. The four outer planets have a very different composition to the inner planets.
~wiki

Answer 2

Thank you

Answer 3

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