Which pigment makes most plants green?
AnswerChlorophyll
Chlorophyll captures light energy for photosynthesis and gives plants their green color.
Science · Facts & stats
Green facts & stats
7 fact-checked facts about the color green, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
On RGB screens, green is a primary color of light along with which two?
AnswerRed and blue
Screens mix red, green and blue light to create all other colors.
Going deeper
Why do leaves look green?
AnswerChlorophyll absorbs red and blue light and reflects green
Leaves use red and blue light for photosynthesis and bounce much of the green back to our eyes.
The Statue of Liberty is green because of a patina on which metal?
AnswerCopper
Its copper skin reacted with air and moisture over decades, forming a green patina.
What does 'green' mean in the phrase 'green energy'?
AnswerEnergy from low-impact sources like wind and solar
'Green' describes energy sources with a low environmental impact.
Expert level
Roughly which range of wavelengths do our eyes see as green?
AnswerAbout 495–570 nm
Green sits in the middle of the visible spectrum, between blue and yellow.
Which metal atom sits at the center of a chlorophyll molecule?
AnswerMagnesium
Chlorophyll has a magnesium atom at its core; heme in blood has iron.
Know these cold?Today's round is five questions like these, 20 seconds each. Your streak and level follow you to every arena.Play today's round