There are _________ planets in the solar system.
Six
Seven
Eight
Ten
__________ is smaller than Earth.
Venus
Jupiter
Saturn
Uranus
____________ is the source of all energy in the solar system.
Earth
Moon
Mercury
Sun
____________ rotates the fastest.
__________ is the largest planet in the solar system.
Mars
___________ is called the blue planet.
On Earth the stars seem ___________ to us.
Twinkling
Bright
Lightning
None of these
__________ is nearest to the sun.
____________ is the hottest planet.
Our sun is also a ___________.
Planet
Satellite
Star
