How are the four inner planets similar to one another?

Answer 1

If you are talking about Mercury,Venus,Earth, and Mars, they are all terresrial. And they are all close(r) to the sun. Also they all have solid surfaces, compared to the outer planets, which most of them have gas surfaces

Answer 2

The inner planets are smaller, rocky, and receive more solar heat. They have solid surfaces, as opposed to the dense atmospheres around the gas giants.

The four inner planets have few moons whereas the outer planets have many.

Mercury and Venus have none. Earth has one and Mars has two.

Answer 3

All are mostly rock rich in iron and silicon.

All had expensive scientific missions to study them (think earth is an exception? Do you know how many people died so we could understand our home?!)

All are far smaller than the gas giants

All spin in the same direction (venus Very! slooowly)

Answer 4

The four inner planets - Mercury, Venus, Earth, and Mars - are all terrestrial planets which means they have solid, rocky surfaces. They are relatively small compared to the outer gas giants and have shorter orbital periods around the Sun. Additionally, they are all located within the inner region of our solar system.

Answer 5

The four inner planets are all made of rock or are rock based but the four outer planets are all made of gas or gas based.

Answer 6

They're all planets, they have a core, and there are a few others.