Cosmos Quiz

When Earth and Venus were born, which started with more CO₂?

• Earth

• Venus

• Neither of them had any CO₂

• Both started with about the same amount of CO₂

What was the difference between Venus' and Earth's CO₂?

• Venus had mostly gas, while Earth had mostly solid/liquid

• Venus had mostly solid/liquid, while Earth had mostly gas

• Nothing, both were exactly the same

• Nothing, as stated before, neither had CO₂ at the start

What would happen if Earth had no CO₂ right now?

• It would heat up substantially

• It would freeze

• Nothing

• It would explode

What would happen if Earth had 2x the CO₂ it has now?

• It would heat up substantially

• It would freeze

• Nothing

• It would explode

How does Earth "breathe"?

• It doesn't, that's ridiculous

• It has lungs like humans

• The plants take in CO₂ when alive and green, and release it when they die (spring to winter)

• Humans take in all the CO₂ during the summer, and release it all in the winter

Some people believe that volcanoes put out more CO₂ than humans, is this true?

• No, at the highest prediction, volcanoes make up 2% of what humans do

• Yes, humans only put out 2% of the amount volcanoes do

• Yes and no; the two have the exact same output

• Who cares? The Earth isn't heating up, otherwise we wouldn't have snow, DUHH

If we lose more glaciers, what will happen?

• Nothing, we're fine

• The water level will go down with all that ice gone

• A positive feedback loop. Glaciers melt, more of the dark ocean shows, that takes in more sunlight to heat it up, which melts more glaciers, etc. etc.

• Earth will get colder because the cold air from the ice will be released into the atmosphere