The Solar System

How many planets are there in the solar system?

• 100

• 8

• 9

• 3

Earth is the _____ planet from the sun?

• First

• Second

• Third

• Last

Which is the hottest planet?

• Venus

• Mercury

• Uranus

• Neptune

Which is the smallest planet?

• Neptune

• Earth

• Mercury

• Jupiter

Which is the biggest planet?

• Mercury

• Earth

• Saturn

• Jupiter

Which planet has the most visible rings?

• Neptune

• Saturn

• Jupiter

• Uranus

Why is Pluto not a planet?

• It is too small.

• It cannot clear its own atmosphere.

• There are many other dwarf planets the same size as Pluto.

• All of the above

Which planet is made up of mostly liquid water?

• Neptune

• Uranus

• Earth

What gas gives Uranus and Neptune its blue color?

• Carbon Dioxide

• Helium

• Methane

• Hydrogen

There is evidence that there used to be _________ on Mars?

• Water

• Dust

• Rocks