Earth is the .... planet in the solar system? A second B third C first
B third
The ..... planet, Pluto, is a dwarf planet . A fifth B ninth C third
B ninth
Neptune, the ..... planet, is cold and windy. A fourth B ninth C eighth
C eighth
Scientists send robots to the ................ planet, Mars, to explore. A sixth B seventh C fourth
C fourth
The ..... person on the moon was from the USA. A first B second C third
A first
The ..... planet, Saturn, has many rings around it. A third B second C sixth
C sixth
Uranus, the ..... planet, has 27 moons. A first B seventh C fifth
B seventh
Jupiter is the ............... planet and the biggest planet. A fifth B eighth C seventh
A fifth