The well runs deep
Trivia questions and answers, drawn fresh from the well
239,757 public questions across 1,818 topics. Challenge yourself, or build the perfect quiz for game night.
239,757
Questions with answers
1,818
Topics to explore
3
Depths of difficulty
Today at the well
1 / 5 0
A molecule of carbon dioxide, a greenhouse gas, contains how many oxygen atoms?
Answer
Two
Which Italian scientist is credited with discovering methane in 1776?
Answer
Alessandro Volta
Which NASA instrument for measuring carbon dioxide was installed on the International Space Station in 2019?
Answer
OCO-3
0 / 5
Round complete
239,757 trivia questions
Every question has an answer
1,818 public topics
Something for every quiz
Free to explore
Reveal answers at your own pace
Fresh from the well
Latest trivia questions
Which Italian scientist is credited with discovering methane in 1776?
Answer
Alessandro Volta
Which British engineer linked fossil-fuel CO2 to warming in a 1938 paper?
Answer
Guy Stewart Callendar
Which unit is used for radiative forcing in climate science?
Answer
Watts per square metre
Which scientific law relates blackbody radiation wavelength to temperature?
Answer
Wien's displacement law