Multiple choice

What do the terrestrial planets have in common?

  1. liquid water

  2. 1 moon orbiting them

  3. multiple species living on them

  4. a crust, mantle, and core on the interior

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Terrestrial planets are rocky worlds that share a similar internal structure, consisting of a central metallic core, a rocky mantle, and an outer crust. Other features like liquid water and life are unique to Earth among these planets, and they have varying numbers of moons.