Neptune Quiz

What is the composition of Neptune's atmosphere?

• Hydrogen, helium, and methane

• Oxygen, nitrogen, and carbon dioxide

• Carbon dioxide, helium, and ammonia

• Nitrogen, oxygen, and methane

How long does it take for Neptune to orbit the Sun once?

• 200 Earth years

• 165 Earth years

• 110 Earth years

• 84 Earth years

Who discovered Neptune in 1846?

• Galileo Galilei

• Isaac Newton

• Nicolaus Copernicus

• Urbain Le Verrier, John Couch Adams, and Johann Galle

What gives Neptune its blue color?

• Ammonia

• Water

• Methane

• Carbon dioxide

How many rings does Neptune have?

• Four rings

• Six rings

• Ten rings

• Eight rings

Neptune is dark, cold, and very windy. It's the last of the planets in our solar system. It's more than __ times as far from the sun as Earth is.

Which planet is Neptune very similar to?

• Uranus

• Saturn

• Jupiter

• Earth

Neptune, like Uranus, is an ___ giant. It’s similar to a gas giant.

You should probably take a ________ to Neptune to measure the wind speed, because it is very windy there!

• thermometer

• hygrometer

• anemometer

• rain guage

• Neptune has such a long journey around the Sun it takes ___ Earth years to go around once. That’s a long year!