Rocky planets
Gas Giants
other objects
Misc.
100

this is the smallest planet in the solar system

What is mercury?

also closest to the sun

100

This planet is known for its beautiful rings

what is saturn?

100

this is a rocky body that orbits our sun in a belt

what is an asteroid

100

this is one of the two planets with our moons

what is mercury or venus

200

this is the area around the sun where liquid water can exist

what is the habitable zone

200

what gas makes neptune and uranus blue

what is methane

200

when these icy objects enter the inner solar system they leave a large tail that we see in our sky

what is a comet

200

this is how the planets formed

what is accretion

300

this is the effect that causes venus to be so warm

what is the greenhouse effect?

thick CO2 atmosphere lets very little heat escape

300
this gas makes up the majority of gas giants

what is hydrogen

300

This is the region of space beyond neptune

what is the kuiper belt or oort cloud?

300

this is the reason pluto is not considered a planet

what is a clear orbit?

400

this is one piece of evidence mars once had water

Hematite (blueberry rocks)

Ice at the poles

glaciers under the dust

400

this is what causes liquid water to exist far outside of the habitable zone

what is jupiter's gravity

planet gets stretched and squashed by the high gravity causing friction and heat

400

Titan has this liquid on its surface

what is a methane?

400
this is the largest moon in our solar system

what is Ganymede