Inner
Outer
Easy to Hard
100

What's the center of the solar system?

The sun

100

What planet has a giant red spot?

Jupiter

100

What inner planet has icy poles?

Mercury

200

Which planet supports life that we know about?

Earth

200

What is the order of the outer planets?

Jupiter, Saturn, Uranus, Neptune.

200

What are the two rocky bands called?

The asteroid belt and the Kuiper belt

300

What are the names of all four inner planets?

Mercury, Venus, Earth, Mars

300

What is the dwarf planet that was the word 'pizza' in the mnemonic for the planets?

Pluto

300

What is the mnemonic device for the planets in order? 

My very educated mother just served us nachos (noodles)

400

Which planets are twins in size?

Venus and Earth

400

What planet rotates on its side?

Uranus

400

On which planets does it most likely rain diamonds?

Uranus and Neptune

500

How long is a day on Mercury?

3 months

500

What gives Neptune and Uranus their blue coloring?

Methane

500

Which moon that orbits Jupiter has a metallic core? (hint: it's the largest in the solar system.)

Ganymede